51512752 has 20 divisors (see below), whose sum is σ = 101930976. Its totient is φ = 25208000.

The previous prime is 51512719. The next prime is 51512779. The reversal of 51512752 is 25721515.

It is a super-2 number, since 2×51512752² = 5307127237227008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51512752.

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, 33499 + ... + 35002.

Almost surely, 2^51512752 is an apocalyptic number.

It is an amenable number.

51512752 is a deficient number, since it is larger than the sum of its proper divisors (50418224).

51512752 is a wasteful number, since it uses less digits than its factorization.

51512752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68556 (or 68550 counting only the distinct ones).

The product of its digits is 3500, while the sum is 28.

The square root of 51512752 is about 7177.2384661512. The cubic root of 51512752 is about 372.0816485520.

The spelling of 51512752 in words is "fifty-one million, five hundred twelve thousand, seven hundred fifty-two".