general_fact: 54740 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 54740 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 54740 is an unremarkable number.
historical_date: November 14th is the day in 2007 that the last direct-current electrical distribution system in the United States is shut down in New York City by Con Edison.