51764157 has 8 divisors (see below), whose sum is σ = 76687680. Its totient is φ = 34509420.

The previous prime is 51764143. The next prime is 51764179. The reversal of 51764157 is 75146715.

51764157 is a `hidden beast` number, since 5 + 1 + 7 + 641 + 5 + 7 = 666.

It is not a de Polignac number, because 51764157 - 2¹² = 51760061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51764137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958569 + ... + 958622.

It is an arithmetic number, because the mean of its divisors is an integer number (9585960).

Almost surely, 2^51764157 is an apocalyptic number.

It is an amenable number.

51764157 is a deficient number, since it is larger than the sum of its proper divisors (24923523).

51764157 is a wasteful number, since it uses less digits than its factorization.

51764157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917200 (or 1917194 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 51764157 is about 7194.7311972026. The cubic root of 51764157 is about 372.6859741292.

The spelling of 51764157 in words is "fifty-one million, seven hundred sixty-four thousand, one hundred fifty-seven".