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53 (fifty-three) is a positive integer following 52 and preceding 54. Its ordinal form is written "fifty-third" or 53rd.

Properties

53 is an odd prime number.

53 is a strange number.

In googology

In Greek-based number-naming systems, 53 is associated with prefix "triapentaconta-", and with prefix "trequinquaginti-" in Latin systems.