general_fact: 54971 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 54971 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 54971 is an uninteresting number.
historical_date: July 3rd is the day in 1938 that President Franklin D. Roosevelt dedicates the Eternal Light Peace Memorial and lights the eternal flame at Gettysburg Battlefield.