Hecho general: 5453 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 5453 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 5453 is an unremarkable number.
Fecha histórica: December 5th is the day in 1958 that Subscriber Trunk Dialling (STD) is inaugurated in the UK by Queen Elizabeth II when she speaks to the Lord Provost in a call from Bristol to Edinburgh.