45255309 has 16 divisors (see below), whose sum is σ = 69698880. Its totient is φ = 25813760.

The previous prime is 45255299. The next prime is 45255337. The reversal of 45255309 is 90355254.

It is a cyclic number.

It is not a de Polignac number, because 45255309 - 2⁴ = 45255293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45255309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45255389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39774 + ... + 40895.

It is an arithmetic number, because the mean of its divisors is an integer number (4356180).

Almost surely, 2^45255309 is an apocalyptic number.

It is an amenable number.

45255309 is a deficient number, since it is larger than the sum of its proper divisors (24443571).

45255309 is a wasteful number, since it uses less digits than its factorization.

45255309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80700.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 45255309 is about 6727.2066268251. The cubic root of 45255309 is about 356.3607340593.

The spelling of 45255309 in words is "forty-five million, two hundred fifty-five thousand, three hundred nine".