57043495657 has 2 divisors, whose sum is σ = 57043495658. Its totient is φ = 57043495656.

The previous prime is 57043495651. The next prime is 57043495661. The reversal of 57043495657 is 75659434075.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32813148736 + 24230346921 = 181144^2 + 155661^2 .

It is a cyclic number.

It is not a de Polignac number, because 57043495657 - 2³⁵ = 22683757289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57043495598 and 57043495607.

It is not a weakly prime, because it can be changed into another prime (57043495651) 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 as a sum of consecutive naturals, namely, 28521747828 + 28521747829.

It is an arithmetic number, because the mean of its divisors is an integer number (28521747829).

Almost surely, 2^57043495657 is an apocalyptic number.

It is an amenable number.

57043495657 is a deficient number, since it is larger than the sum of its proper divisors (1).

57043495657 is an equidigital number, since it uses as much as digits as its factorization.

57043495657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876000, while the sum is 55.

The spelling of 57043495657 in words is "fifty-seven billion, forty-three million, four hundred ninety-five thousand, six hundred fifty-seven".