general_fact: 56910 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 56910 is an unremarkable number.
trivia: 56910 is an unremarkable number.
historical_date: October 24th is the day in 1861 that the First Transcontinental Telegraph line across the United States is completed, spelling the end for the 18-month-old Pony Express.