general_fact: 48590 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 48590 is an unremarkable number.
trivia: 48590 is an unremarkable number.
historical_date: January 12th is the day in 475 that Basiliscus becomes Byzantine Emperor, with a coronation ceremony in the Hebdomon palace in Constantinople.