Hecho matemático: 52155 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 52155 is a boring number.
Fecha histórica: October 17th is the day in 1907 that Guglielmo Marconi's company begins the first commercial transatlantic wireless service between Glace Bay, Nova Scotia, Canada and Clifden, Ireland.