51604264 has 16 divisors (see below), whose sum is σ = 96928020. Its totient is φ = 25756800.

The previous prime is 51604229. The next prime is 51604277. The reversal of 51604264 is 46240615.

It can be written as a sum of positive squares in 2 ways, for example, as 51408900 + 195364 = 7170^2 + 442^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559 + ... + 10174.

Almost surely, 2^51604264 is an apocalyptic number.

It is an amenable number.

51604264 is a deficient number, since it is larger than the sum of its proper divisors (45323756).

51604264 is a wasteful number, since it uses less digits than its factorization.

51604264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11340 (or 11336 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 51604264 is about 7183.6107912386. The cubic root of 51604264 is about 372.3018515841.

Adding to 51604264 its reverse (46240615), we get a palindrome (97844879).

The spelling of 51604264 in words is "fifty-one million, six hundred four thousand, two hundred sixty-four".