Hecho general: 57223 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 57223 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 57223 is a boring number.
Fecha histórica: September 1st is the day in 1970 that Attempted assassination of King Hussein of Jordan by Palestinian guerrillas, who attacked his motorcade.