51157953 has 48 divisors (see below), whose sum is σ = 95249280. Its totient is φ = 26563680.

The previous prime is 51157933. The next prime is 51157961. The reversal of 51157953 is 35975115.

51157953 is a `hidden beast` number, since 511 + 57 + 95 + 3 = 666.

It is not a de Polignac number, because 51157953 - 2⁸ = 51157697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51157933) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21751 + ... + 23987.

It is an arithmetic number, because the mean of its divisors is an integer number (1984360).

Almost surely, 2^51157953 is an apocalyptic number.

It is an amenable number.

51157953 is a deficient number, since it is larger than the sum of its proper divisors (44091327).

51157953 is a wasteful number, since it uses less digits than its factorization.

51157953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275 (or 2258 counting only the distinct ones).

The product of its digits is 23625, while the sum is 36.

The square root of 51157953 is about 7152.4788010871. The cubic root of 51157953 is about 371.2254304728.

The spelling of 51157953 in words is "fifty-one million, one hundred fifty-seven thousand, nine hundred fifty-three".