general_fact: 45211 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 45211 is an unremarkable number.
trivia: 45211 is a boring number.
historical_date: October 13th is the day in 1881 that Revival of the Hebrew language as Eliezer Ben-Yehuda and friends agree to use Hebrew exclusively in their conversations.