2556155057 has 2 divisors, whose sum is σ = 2556155058. Its totient is φ = 2556155056.

The previous prime is 2556155053. The next prime is 2556155191. The reversal of 2556155057 is 7505516552.

2556155057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1914850081 + 641304976 = 43759^2 + 25324^2 .

It is a cyclic number.

It is not a de Polignac number, because 2556155057 - 2² = 2556155053 is a prime.

It is not a weakly prime, because it can be changed into another prime (2556155051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278077528 + 1278077529.

It is an arithmetic number, because the mean of its divisors is an integer number (1278077529).

Almost surely, 2^2556155057 is an apocalyptic number.

It is an amenable number.

2556155057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556155057 is an equidigital number, since it uses as much as digits as its factorization.

2556155057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262500, while the sum is 41.

The square root of 2556155057 is about 50558.4321058318. The cubic root of 2556155057 is about 1367.2955433406.

The spelling of 2556155057 in words is "two billion, five hundred fifty-six million, one hundred fifty-five thousand, fifty-seven".