Fatto generale: 5544 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 5544 is the number of permutations of 9 items that fix 4 elements.
Trivia: 5544 is an unremarkable number.
Data storica: March 6th is the day in 1953 that Georgy Maksimilianovich Malenkov succeeds Joseph Stalin as Premier of the Soviet Union and First Secretary of the Communist Party of the Soviet Union.