975817057 has 2 divisors, whose sum is σ = 975817058. Its totient is φ = 975817056.

The previous prime is 975817049. The next prime is 975817069. The reversal of 975817057 is 750718579.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551498256 + 424318801 = 23484^2 + 20599^2 .

It is a cyclic number.

It is not a de Polignac number, because 975817057 - 2³ = 975817049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 975817057.

It is not a weakly prime, because it can be changed into another prime (975817657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487908528 + 487908529.

It is an arithmetic number, because the mean of its divisors is an integer number (487908529).

Almost surely, 2^975817057 is an apocalyptic number.

It is an amenable number.

975817057 is a deficient number, since it is larger than the sum of its proper divisors (1).

975817057 is an equidigital number, since it uses as much as digits as its factorization.

975817057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 617400, while the sum is 49.

The square root of 975817057 is about 31238.0706350440. The cubic root of 975817057 is about 991.8731522601.

The spelling of 975817057 in words is "nine hundred seventy-five million, eight hundred seventeen thousand, fifty-seven".