51255936 has 64 divisors (see below), whose sum is σ = 151286400. Its totient is φ = 17084160.

The previous prime is 51255931. The next prime is 51255943. The reversal of 51255936 is 63955215.

51255936 is a `hidden beast` number, since 512 + 55 + 93 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51255936.

It is not an unprimeable number, because it can be changed into a prime (51255931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3960 + ... + 10871.

It is an arithmetic number, because the mean of its divisors is an integer number (2363850).

Almost surely, 2^51255936 is an apocalyptic number.

It is an amenable number.

51255936 is an abundant number, since it is smaller than the sum of its proper divisors (100030464).

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

51255936 is a wasteful number, since it uses less digits than its factorization.

51255936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14854 (or 14836 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 51255936 is about 7159.3251078576. The cubic root of 51255936 is about 371.4622824292.

The spelling of 51255936 in words is "fifty-one million, two hundred fifty-five thousand, nine hundred thirty-six".