Fatto generale: 1150 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1150 is the number of 11-iamonds without bilateral symmetry.
Trivia: 1150 is an unremarkable number.
Data storica: February 23rd is the day in 1943 that a fire breaks out at St. Joseph's Orphanage, County Cavan, Ireland, killing 36 people (35 of whom are children).