Fait général: 73553 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 73553 is an uninteresting number.
Culture générale: 73553 is a boring number.
Date historique: May 19th is the day in 1950 that a barge containing munitions destined for Pakistan explodes in the harbor at South Amboy, New Jersey, devastating the city.