51157933 has 2 divisors, whose sum is σ = 51157934. Its totient is φ = 51157932.

The previous prime is 51157919. The next prime is 51157961. The reversal of 51157933 is 33975115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51008164 + 149769 = 7142^2 + 387^2 .

It is a cyclic number.

It is not a de Polignac number, because 51157933 - 2⁵ = 51157901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51154933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25578966 + 25578967.

It is an arithmetic number, because the mean of its divisors is an integer number (25578967).

Almost surely, 2^51157933 is an apocalyptic number.

It is an amenable number.

51157933 is a deficient number, since it is larger than the sum of its proper divisors (1).

51157933 is an equidigital number, since it uses as much as digits as its factorization.

51157933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14175, while the sum is 34.

The square root of 51157933 is about 7152.4774029702. The cubic root of 51157933 is about 371.2253820964.

The spelling of 51157933 in words is "fifty-one million, one hundred fifty-seven thousand, nine hundred thirty-three".