General fact: 5774 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 5774 is the smallest number whose square begins with four 3's.
Trivia: 5774 is an uninteresting number.
Historical date: October 22nd is the day in 1910 that Dr. Crippen is convicted at the Old Bailey of poisoning his wife and is subsequently hanged at Pentonville Prison in London.