general_fact: 8241 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 8241 is a value of n for which n has s(n) / reverse(n) divisors.
trivia: 8241 is a boring number.
historical_date: July 24th is the day in 1701 that Antoine de la Mothe Cadillac founds the trading post at Fort Pontchartrain, which later becomes the city of Detroit, Michigan.