Mathematical fact: 21754 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 21754 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: July 23rd is the day in 1962 that Telstar relays the first publicly transmitted, live trans-Atlantic television program, featuring Walter Cronkite.