math_fact: 45911 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 45911 is an uninteresting number.
historical_date: September 12th is the day in 1229 that the Aragonese army under the command of James I of Aragon disembarks at Santa Ponça, Majorca, with the purpose of conquering the island.