Hecho matemático: 7448 is a value of n for which n, 2n, 3n, and 4n all use the same number of digits in Roman numerals.
Trivia: 7448 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: May 22nd is the day in 1377 that Pope Gregory XI issues five papal bulls to denounce the doctrines of English theologian John Wycliffe.