45465921 has 16 divisors (see below), whose sum is σ = 68925120. Its totient is φ = 29604960.

The previous prime is 45465907. The next prime is 45465929. The reversal of 45465921 is 12956454.

It is not a de Polignac number, because 45465921 - 2⁷ = 45465793 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45465929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18420 + ... + 20741.

It is an arithmetic number, because the mean of its divisors is an integer number (4307820).

Almost surely, 2^45465921 is an apocalyptic number.

It is an amenable number.

45465921 is a deficient number, since it is larger than the sum of its proper divisors (23459199).

45465921 is a wasteful number, since it uses less digits than its factorization.

45465921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39213 (or 39207 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 45465921 is about 6742.8422048866. The cubic root of 45465921 is about 356.9126966804.

The spelling of 45465921 in words is "forty-five million, four hundred sixty-five thousand, nine hundred twenty-one".