51157964 has 48 divisors (see below), whose sum is σ = 111386016. Its totient is φ = 20198400.

The previous prime is 51157961. The next prime is 51157969. The reversal of 51157964 is 46975115.

51157964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51157961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7094 + ... + 12354.

It is an arithmetic number, because the mean of its divisors is an integer number (2320542).

Almost surely, 2^51157964 is an apocalyptic number.

It is an amenable number.

51157964 is an abundant number, since it is smaller than the sum of its proper divisors (60228052).

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

51157964 is a wasteful number, since it uses less digits than its factorization.

51157964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306 (or 5304 counting only the distinct ones).

The product of its digits is 37800, while the sum is 38.

The square root of 51157964 is about 7152.4795700512. The cubic root of 51157964 is about 371.2254570798.

The spelling of 51157964 in words is "fifty-one million, one hundred fifty-seven thousand, nine hundred sixty-four".