51706504 has 16 divisors (see below), whose sum is σ = 97260300. Its totient is φ = 25770432.

The previous prime is 51706493. The next prime is 51706519. The reversal of 51706504 is 40560715.

It can be written as a sum of positive squares in 2 ways, for example, as 51696100 + 10404 = 7190^2 + 102^2 .

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, 7659 + ... + 12730.

Almost surely, 2^51706504 is an apocalyptic number.

It is an amenable number.

51706504 is a deficient number, since it is larger than the sum of its proper divisors (45553796).

51706504 is a wasteful number, since it uses less digits than its factorization.

51706504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20712 (or 20708 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 51706504 is about 7190.7234684696. The cubic root of 51706504 is about 372.5475614540.

The spelling of 51706504 in words is "fifty-one million, seven hundred six thousand, five hundred four".