Hecho matemático: 54197 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 54197 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: May 20th is the day in 1609 that Shakespeare's sonnets are first published in London, perhaps illicitly, by the publisher Thomas Thorpe.