51755560 has 32 divisors (see below), whose sum is σ = 118652040. Its totient is φ = 20310784.

The previous prime is 51755551. The next prime is 51755573. The reversal of 51755560 is 6555715.

It can be written as a sum of positive squares in 4 ways, for example, as 39463524 + 12292036 = 6282^2 + 3506^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10087 + ... + 14326.

Almost surely, 2^51755560 is an apocalyptic number.

It is an amenable number.

51755560 is an abundant number, since it is smaller than the sum of its proper divisors (66896480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51755560 is a wasteful number, since it uses less digits than its factorization.

51755560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24477 (or 24473 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 51755560 is about 7194.1337213038. The cubic root of 51755560 is about 372.6653410702.

The spelling of 51755560 in words is "fifty-one million, seven hundred fifty-five thousand, five hundred sixty".