57664157 has 4 divisors (see below), whose sum is σ = 57680700. Its totient is φ = 57647616.

The previous prime is 57664133. The next prime is 57664169. The reversal of 57664157 is 75146675.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41229241 + 16434916 = 6421^2 + 4054^2 .

It is a cyclic number.

It is not a de Polignac number, because 57664157 - 2¹² = 57660061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57664127) 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 3 ways as a sum of consecutive naturals, for example, 782 + ... + 10767.

It is an arithmetic number, because the mean of its divisors is an integer number (14420175).

Almost surely, 2^57664157 is an apocalyptic number.

It is an amenable number.

57664157 is a deficient number, since it is larger than the sum of its proper divisors (16543).

57664157 is a wasteful number, since it uses less digits than its factorization.

57664157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16542.

The product of its digits is 176400, while the sum is 41.

The square root of 57664157 is about 7593.6919215886. The cubic root of 57664157 is about 386.3390869871.

The spelling of 57664157 in words is "fifty-seven million, six hundred sixty-four thousand, one hundred fifty-seven".