52387904 has 14 divisors (see below), whose sum is σ = 103957374. Its totient is φ = 26193920.

The previous prime is 52387879. The next prime is 52387913. The reversal of 52387904 is 40978325.

It can be written as a sum of positive squares in only one way, i.e., 47334400 + 5053504 = 6880^2 + 2248^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409217 + ... + 409344.

Almost surely, 2^52387904 is an apocalyptic number.

It is an amenable number.

52387904 is a deficient number, since it is larger than the sum of its proper divisors (51569470).

52387904 is an equidigital number, since it uses as much as digits as its factorization.

52387904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818573 (or 818563 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 52387904 is about 7237.9488807258. The cubic root of 52387904 is about 374.1769302121.

The spelling of 52387904 in words is "fifty-two million, three hundred eighty-seven thousand, nine hundred four".