general_fact: 58175 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 58175 is a boring number.
trivia: 58175 is an uninteresting number.
historical_date: April 11th is the day in 1981 that a massive riot in Brixton, South London, results in almost 300 police injuries and 65 serious civilian injuries.