57706157 has 2 divisors, whose sum is σ = 57706158. Its totient is φ = 57706156.

The previous prime is 57706153. The next prime is 57706163. The reversal of 57706157 is 75160775.

57706157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45414121 + 12292036 = 6739^2 + 3506^2 .

It is a cyclic number.

It is not a de Polignac number, because 57706157 - 2² = 57706153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57706157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57706151) 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 as a sum of consecutive naturals, namely, 28853078 + 28853079.

It is an arithmetic number, because the mean of its divisors is an integer number (28853079).

Almost surely, 2^57706157 is an apocalyptic number.

It is an amenable number.

57706157 is a deficient number, since it is larger than the sum of its proper divisors (1).

57706157 is an equidigital number, since it uses as much as digits as its factorization.

57706157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51450, while the sum is 38.

The square root of 57706157 is about 7596.4568714632. The cubic root of 57706157 is about 386.4328616101.

The spelling of 57706157 in words is "fifty-seven million, seven hundred six thousand, one hundred fifty-seven".