Fatto generale: 1153 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1153 is the smallest number with the property that its first 3 multiples contain the digit 3.
Trivia: 1153 is a boring number.
Data storica: February 26th is the day in 2004 that Republic of Macedonia President Boris Trajkovski is killed in a plane crash near Mostar, Bosnia and Herzegovina.