45531504 has 40 divisors (see below), whose sum is σ = 130693520. Its totient is φ = 15177024.

The previous prime is 45531503. The next prime is 45531511. The reversal of 45531504 is 40513554.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45531503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52267 + ... + 53130.

It is an arithmetic number, because the mean of its divisors is an integer number (3267338).

Almost surely, 2^45531504 is an apocalyptic number.

It is an amenable number.

45531504 is an abundant number, since it is smaller than the sum of its proper divisors (85162016).

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

45531504 is a wasteful number, since it uses less digits than its factorization.

45531504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105414 (or 105402 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 45531504 is about 6747.7036093770. The cubic root of 45531504 is about 357.0842255903.

The spelling of 45531504 in words is "forty-five million, five hundred thirty-one thousand, five hundred four".