Hecho general: 19501 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 19501 is an unremarkable number.
Trivia: 19501 is a boring number.
Fecha histórica: May 22nd is the day in 1960 that an earthquake measuring 9.5 on the moment magnitude scale, now known as the Great Chilean Earthquake, hits southern Chile.