8155585057 has 2 divisors, whose sum is σ = 8155585058. Its totient is φ = 8155585056.

The previous prime is 8155585037. The next prime is 8155585127. The reversal of 8155585057 is 7505855518.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8154812416 + 772641 = 90304^2 + 879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8155585057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8155585057.

It is not a weakly prime, because it can be changed into another prime (8155585037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4077792528 + 4077792529.

It is an arithmetic number, because the mean of its divisors is an integer number (4077792529).

Almost surely, 2^8155585057 is an apocalyptic number.

It is an amenable number.

8155585057 is a deficient number, since it is larger than the sum of its proper divisors (1).

8155585057 is an equidigital number, since it uses as much as digits as its factorization.

8155585057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1400000, while the sum is 49.

The square root of 8155585057 is about 90308.2778985404. The cubic root of 8155585057 is about 2012.8822668629.

The spelling of 8155585057 in words is "eight billion, one hundred fifty-five million, five hundred eighty-five thousand, fifty-seven".