Fatto generale: 4345 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4345 is a boring number.
Trivia: 4345 is an uninteresting number.
Data storica: November 23rd is the day in 2005 that Ellen Johnson Sirleaf is elected president of Liberia and becomes the first woman to lead an African country.