general_fact: 15522 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 15522 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 15522 is an uninteresting number.
historical_date: June 30th is the day in 1986 that the U.S. Supreme Court rules in Bowers v. Hardwick that states can outlaw homosexual acts between consenting adults.