Fatto matematico: 8281 is the only 4-digit square whose two 2-digit pairs are consecutive.
Trivia: 8281 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 2nd is the day in 1946 that the Interim Government of India is formed with Jawaharlal Nehru as Vice President with the powers of a Prime Minister.