Hecho general: 50818 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 50818 is an uninteresting number.
Trivia: 50818 is a boring number.
Fecha histórica: February 18th is the day in 1913 that Pedro Lascuráin becomes President of Mexico for 45 minutes; this is the shortest term to date of any person as president of any country.