51504944 has 20 divisors (see below), whose sum is σ = 100762896. Its totient is φ = 25501632.

The previous prime is 51504913. The next prime is 51504967. The reversal of 51504944 is 44940515.

It is a self number, because there is not a number n which added to its sum of digits gives 51504944.

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, 13979 + ... + 17274.

Almost surely, 2^51504944 is an apocalyptic number.

It is an amenable number.

51504944 is a deficient number, since it is larger than the sum of its proper divisors (49257952).

51504944 is a wasteful number, since it uses less digits than its factorization.

51504944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31364 (or 31358 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 51504944 is about 7176.6945037392. The cubic root of 51504944 is about 372.0628482861.

The spelling of 51504944 in words is "fifty-one million, five hundred four thousand, nine hundred forty-four".