Fatto generale: 54113 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 54113 is an unremarkable number.
Trivia: 54113 is a boring number.
Data storica: February 26th is the day in 1935 that Robert Watson-Watt carries out a demonstration near Daventry which leads directly to the development of RADAR in the United Kingdom.