Fatto generale: 54563 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 54563 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 54563 is an unremarkable number.
Data storica: May 21st is the day in 1936 that Sada Abe is arrested after wandering the streets of Tokyo for days with her dead lover's severed genitals in her hand.