general_fact: 53950 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 53950 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 53950 is an uninteresting number.
historical_date: September 16th is the day in 1961 that the United States National Hurricane Research Project drops eight cylinders of silver iodide into the eyewall of Hurricane Esther.