Hecho general: 50472 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 50472 is an uninteresting number.
Trivia: 50472 is a boring number.
Fecha histórica: March 9th is the day in 1990 that Dr. Antonia Novello is sworn in as Surgeon General of the United States, becoming the first female and Hispanic American to serve in that position.