general_fact: 5472 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 5472 is an unremarkable number.
trivia: 5472 is an unremarkable number.
historical_date: December 24th is the day in 563 that the Byzantine church Hagia Sophia in Constantinople is dedicated for the second time after being destroyed by earthquakes.