Fatto generale: 52889 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 52889 is an unremarkable number.
Trivia: 52889 is an uninteresting number.
Data storica: October 20th is the day in 1961 that the Soviet Union performs the first armed test of a submarine-launched ballistic missile, launching an R-13 from a Golf class submarine.