57535657 has 2 divisors, whose sum is σ = 57535658. Its totient is φ = 57535656.

The previous prime is 57535651. The next prime is 57535693. The reversal of 57535657 is 75653575.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49829481 + 7706176 = 7059^2 + 2776^2 .

It is a cyclic number.

It is not a de Polignac number, because 57535657 - 2³ = 57535649 is a prime.

It is not a weakly prime, because it can be changed into another prime (57535651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28767828 + 28767829.

It is an arithmetic number, because the mean of its divisors is an integer number (28767829).

Almost surely, 2^57535657 is an apocalyptic number.

It is an amenable number.

57535657 is a deficient number, since it is larger than the sum of its proper divisors (1).

57535657 is an equidigital number, since it uses as much as digits as its factorization.

57535657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551250, while the sum is 43.

The square root of 57535657 is about 7585.2262326182. The cubic root of 57535657 is about 386.0518982185.

The spelling of 57535657 in words is "fifty-seven million, five hundred thirty-five thousand, six hundred fifty-seven".