"The Richest Country in the World"

You can hardly go a day in the United States without someone commenting on how rich this nation is;  it is usually "the richest in the world".  We Americans might be prone to hyperbole, but there is some data to support that claim.

There is a lot of data that also calls BS.

From an economics standpoint, a nation's wealth is represented by their Gross domestic product (GDP)  which is "stream of goods and services that the nation creates".

http://statisticstimes.com/economy/countries-by-projected-gdp.php

So, in order of GDP (nominal for 2018)with Population rank and an equalizer number from GDP divided by population for a per capita GDP if you will.  Apples to Apples and all that) with HDI and IAHDI so that actual people conditions are included.
#1.  USA           Population #3          PCGDP   0.06202764 (#1)   HDI (#13)  IAHDI (#24)
#2.  China         Population #1          PCGDP    0.00992387 (#9)  HDI (#86)  IAHDI (#62)
#3.  Japan          Population #11        PCGDP    0.04073203 (#6)  HDI (#19)  IAHDI  (#2)
#4.  Germany    Population #19        PCGDP    0.05108812 (#2)  HDI (#5)    IAHDI  (#7)
#5.  UK             Population #21        PCGDP    0.04385199 (#5)  HDI (#14)  IAHDI  (#17)
#6.  France        Population #22        PCGDP    0.04467111 (#4)  HDI (#24)  IAHDI  (#22)
#7.  India           Population #2          PCGDP    0.00208091 (#10)HDI (NA)  IAHDI  (#101)
#8.  Italy            Population #24        PCGDP    0.03684545 (#7) HDI (#28)   IAHDI  (#31)
#9.  Brazil          Population #5          PCGDP   0.01007058  (#8) HDI (#79)   IAHDI  (#78)
#10.Canada        Population #38        PCGDP   0.04824359 (#3)  HDI (#12)   IAHDI  (#12)
(The smallest GDP is Syria with zero, Tuvalu, Nauru, Marshall Islands, Kiribati, Palau, Micronesia, Tonga, Sao Tome and Principi, and Dominica. I couldn't find most of them on a map without some really big labels)

https://en.wikipedia.org/wiki/List_of_countries_by_total_wealth

Now, if there is more to life than just how much we produce for sale, let us include some other parameters for comparison.  All that apparent wealth should provide a better standard of living.

https://en.wikipedia.org/wiki/List_of_countries_by_Human_Development_Index

The Human Development Index (HDI) is a composite statistic of life expectancy, education, and income per capita indicators. A country scores higher HDI when the life expectancy at birth is longer, the education period is longer, and the income per capita is higher.

IN order of highest HDI: (parenthesis is their IAHDI)
#1  Norway                    (#3)        
#2 Switzerland              (#4)
#3 Australia                   (#7)
#4 Ireland                      (#11)
#5 Germany                  (#7)
#6 Iceland                     (#1)
#7 Hong Kong               (#21)
 and Sweden                 (#6)
#9 Singapore                 (#19)
#10 Netherlands            (#10)

https://en.wikipedia.org/wiki/List_of_countries_by_inequality-adjusted_HDI

But since the United States is currently suffering from a high level of inequality (and "currently" probably means "always".)  there is an inequality adjusted HDI.  So that those 4 to 6 individuals/families that own more wealth than the other 90% of us in the USA are not falsely elevated in the numbers while living in poverty and homeless situations.

So, if someone wants to brag, maybe it should be Japan or Germany for being both productive and having a high standard of living for everyone.
Or maybe millennials should be considering Iceland, Japan, Norway, Switzerland for possible address changes.  Or, if English is all you can manage, Australia, Canada, the UK are all doing better if you aren't rich.  
Me, I'm still babysitting and trying to fix up my house.  Inertia is winning, but at least I'm not so confused I think we are the "richest country in the world" for us regular folks.

Live Long and proper!