3122057857 has 2 divisors, whose sum is σ = 3122057858. Its totient is φ = 3122057856.

The previous prime is 3122057849. The next prime is 3122057879. The reversal of 3122057857 is 7587502213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3054883441 + 67174416 = 55271^2 + 8196^2 .

It is a cyclic number.

It is not a de Polignac number, because 3122057857 - 2³ = 3122057849 is a prime.

It is not a weakly prime, because it can be changed into another prime (3122057557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561028928 + 1561028929.

It is an arithmetic number, because the mean of its divisors is an integer number (1561028929).

Almost surely, 2^3122057857 is an apocalyptic number.

It is an amenable number.

3122057857 is a deficient number, since it is larger than the sum of its proper divisors (1).

3122057857 is an equidigital number, since it uses as much as digits as its factorization.

3122057857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 3122057857 is about 55875.3779137108. The cubic root of 3122057857 is about 1461.5499048631.

The spelling of 3122057857 in words is "three billion, one hundred twenty-two million, fifty-seven thousand, eight hundred fifty-seven".