Fatto generale: 16515 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 16515 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 16515 is an unremarkable number.
Data storica: March 19th is the day in 2004 that a Swedish DC-3 shot down by a Russian MiG-15 in 1952 over the Baltic Sea is finally recovered after years of work.