general_fact: 52498 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 52498 is an uninteresting number.
trivia: 52498 is a boring number.
historical_date: September 25th is the day in 1555 that the Peace of Augsburg is signed in Augsburg by Charles V and the princes of the Schmalkaldic League.