Fatto generale: 5524 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 5524 is a boring number.
Trivia: 5524 is an uninteresting number.
Data storica: February 14th is the day in 1831 that Ras Marye of Yejju marches into Tigray and defeats and kills Dejazmach Sabagadis in the Battle of Debre Abbay.