Fatto generale: 58712 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 58712 is a boring number.
Trivia: 58712 is an unremarkable number.
Data storica: September 29th is the day in 2007 that Calder Hall, the world's first commercial nuclear power station, is demolished in a controlled explosion.