Fatto generale: 2297 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2297 is the number of inequivalent binary linear codes of length 10.
Trivia: 2297 is an uninteresting number.
Data storica: April 15th is the day in 1632 that Battle of Rain; Swedes under Gustavus Adolphus defeat the Holy Roman Empire during the Thirty Years' War.