Fatto generale: 54773 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 54773 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 54773 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: December 17th is the day in 1961 that Fire in the Gran Circus American in the city of Niterói, Rio de Janeiro, Brazil, the biggest tragedy in circus history.