538501504 has 16 divisors (see below), whose sum is σ = 1072796220. Its totient is φ = 269250688.

The previous prime is 538501501. The next prime is 538501511. The reversal of 538501504 is 405105835.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538501501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2103394 + ... + 2103649.

Almost surely, 2^538501504 is an apocalyptic number.

It is an amenable number.

538501504 is a deficient number, since it is larger than the sum of its proper divisors (534294716).

538501504 is an equidigital number, since it uses as much as digits as its factorization.

538501504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207057 (or 4207045 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 538501504 is about 23205.6351776891. The cubic root of 538501504 is about 813.5713382710.

The spelling of 538501504 in words is "five hundred thirty-eight million, five hundred one thousand, five hundred four".