Fatto generale: 55865 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 55865 is a boring number.
Trivia: 55865 is an uninteresting number.
Data storica: December 13th is the day in 1979 that the Canadian Government of Prime Minister Joe Clark is defeated in the House of Commons, prompting the 1980 Canadian election.