general_fact: 53824 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 53824 is an unremarkable number.
trivia: 53824 is a boring number.
historical_date: May 13th is the day in 1515 that Mary Tudor, Queen of France and Charles Brandon, 1st Duke of Suffolk are officially married at Greenwich.