Hecho general: 514 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 514 is the smallest number whose cube begins with 13579.
Trivia: 514 is an uninteresting number.
Fecha histórica: May 28th is the day in 585 BC that a solar eclipse occurs while Alyattes is battling Cyaxares in the Battle of the Eclipse, leading to a truce.