45531288 has 64 divisors (see below), whose sum is σ = 137980800. Its totient is φ = 13796640.

The previous prime is 45531263. The next prime is 45531301. The reversal of 45531288 is 88213554.

It is a happy number.

45531288 is a `hidden beast` number, since 45 + 531 + 2 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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, 7206 + ... + 11957.

It is an arithmetic number, because the mean of its divisors is an integer number (2155950).

Almost surely, 2^45531288 is an apocalyptic number.

It is an amenable number.

45531288 is an abundant number, since it is smaller than the sum of its proper divisors (92449512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45531288 is a wasteful number, since it uses less digits than its factorization.

45531288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19189 (or 19179 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 45531288 is about 6747.6876039129. The cubic root of 45531288 is about 357.0836609240.

The spelling of 45531288 in words is "forty-five million, five hundred thirty-one thousand, two hundred eighty-eight".