45525921 has 16 divisors (see below), whose sum is σ = 70012800. Its totient is φ = 25774848.

The previous prime is 45525913. The next prime is 45525923. The reversal of 45525921 is 12952554.

It is not a de Polignac number, because 45525921 - 2³ = 45525913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45525923) 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, 7656 + ... + 12233.

It is an arithmetic number, because the mean of its divisors is an integer number (4375800).

Almost surely, 2^45525921 is an apocalyptic number.

It is an amenable number.

45525921 is a deficient number, since it is larger than the sum of its proper divisors (24486879).

45525921 is a wasteful number, since it uses less digits than its factorization.

45525921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20008.

The product of its digits is 18000, while the sum is 33.

The square root of 45525921 is about 6747.2899003970. The cubic root of 45525921 is about 357.0696299620.

The spelling of 45525921 in words is "forty-five million, five hundred twenty-five thousand, nine hundred twenty-one".