87570901057 has 2 divisors, whose sum is σ = 87570901058. Its totient is φ = 87570901056.

The previous prime is 87570900979. The next prime is 87570901081. The reversal of 87570901057 is 75010907578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75539224336 + 12031676721 = 274844^2 + 109689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87570901057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87570901057.

It is not a weakly prime, because it can be changed into another prime (87570901357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43785450528 + 43785450529.

It is an arithmetic number, because the mean of its divisors is an integer number (43785450529).

Almost surely, 2^87570901057 is an apocalyptic number.

It is an amenable number.

87570901057 is a deficient number, since it is larger than the sum of its proper divisors (1).

87570901057 is an equidigital number, since it uses as much as digits as its factorization.

87570901057 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 87570901057 in words is "eighty-seven billion, five hundred seventy million, nine hundred one thousand, fifty-seven".