I checked before posting by typing in "median us income": https://archive.is/M05IS . It's $51,939. The difference is that this is median household income, not median personal income. This is the answer I usually see when median income is discussed, and it's really debatable which is the most appropriate to use when discussing what a person can "live off of", though I accept that personal median income is the most direct analog to personal Social Security payments. The real question is whether the OP has a wife that will also be collecting SS.
> The overall median income for all 155 million persons over the age of 15 who worked with earnings in 2005 was $28,567
Which, divided by 12, is $2380.
https://en.wikipedia.org/wiki/Personal_income_in_the_United_...