general_fact: 49911 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 49911 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 49911 is an unremarkable number.
historical_date: August 25th is the day in 450 that Pulcheria becomes empress of the Byzantine Empire after her brother Theodosius II is killed during an hunting accident.