51753920 has 28 divisors (see below), whose sum is σ = 123239784. Its totient is φ = 20701440.

The previous prime is 51753901. The next prime is 51753943. The reversal of 51753920 is 2935715.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 80546 + ... + 81185.

Almost surely, 2^51753920 is an apocalyptic number.

It is an amenable number.

51753920 is an abundant number, since it is smaller than the sum of its proper divisors (71485864).

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

51753920 is a wasteful number, since it uses less digits than its factorization.

51753920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161748 (or 161738 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 51753920 is about 7194.0197386440. The cubic root of 51753920 is about 372.6614047613.

The spelling of 51753920 in words is "fifty-one million, seven hundred fifty-three thousand, nine hundred twenty".