45904521 has 32 divisors (see below), whose sum is σ = 69701632. Its totient is φ = 26671680.

The previous prime is 45904501. The next prime is 45904559. The reversal of 45904521 is 12540954.

45904521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45904521 - 2⁵ = 45904489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45904501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51546 + ... + 52428.

It is an arithmetic number, because the mean of its divisors is an integer number (2178176).

Almost surely, 2^45904521 is an apocalyptic number.

It is an amenable number.

45904521 is a deficient number, since it is larger than the sum of its proper divisors (23797111).

45904521 is a wasteful number, since it uses less digits than its factorization.

45904521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 45904521 is about 6775.2875215743. The cubic root of 45904521 is about 358.0567126117.

The spelling of 45904521 in words is "forty-five million, nine hundred four thousand, five hundred twenty-one".