45972531 has 24 divisors (see below), whose sum is σ = 72788976. Its totient is φ = 27728640.

The previous prime is 45972527. The next prime is 45972551. The reversal of 45972531 is 13527954.

45972531 is a `hidden beast` number, since 4 + 59 + 72 + 531 = 666.

It is not a de Polignac number, because 45972531 - 2² = 45972527 is a prime.

It is a super-2 number, since 2×45972531² = 4226947213091922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45972551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22071 + ... + 24063.

It is an arithmetic number, because the mean of its divisors is an integer number (3032874).

Almost surely, 2^45972531 is an apocalyptic number.

45972531 is a deficient number, since it is larger than the sum of its proper divisors (26816445).

45972531 is a wasteful number, since it uses less digits than its factorization.

45972531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243 (or 2240 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 45972531 is about 6780.3046391737. The cubic root of 45972531 is about 358.2334520729.

The spelling of 45972531 in words is "forty-five million, nine hundred seventy-two thousand, five hundred thirty-one".