45 (forty-five) is a positive integer following 44 and preceding 46. Its ordinal form is written "forty-fifth" or 45th.

Properties Edit

45 is an odd composite number.

45 is the 9th triangular number.

45 is a solitary number.

In googology Edit

In Greek-based number-naming systems, 45 is associated with prefix "pentatetraconta-", and with prefix "quinquadraginti-" in Latin systems.


As a banknote denomination Edit

The third Burmese kyat had banknotes with this number in the denomination.