Hecho general: 52701 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 52701 is an uninteresting number.
Trivia: 52701 is a boring number.
Fecha histórica: April 15th is the day in 1943 that an Allied bomber attack misses the Minerva automobile factory and hits the Belgian town of Mortsel instead, killing 936 civilians.