Fatto generale: 2651 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2651 is the number of asymmetric trees with 12 vertices.
Trivia: 2651 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: April 4th is the day in 1913 that the Greek aviator Emmanouil Argyropoulos becomes the first pilot victim of the Hellenic Air Force when his plane crashes.