Hecho general: 53224 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 53224 is a boring number.
Trivia: 53224 is an uninteresting number.
Fecha histórica: September 20th is the day in 1519 that Ferdinand Magellan sets sail from Sanlúcar de Barrameda with about 270 men on his expedition to circumnavigate the globe.