2556385841 has 2 divisors, whose sum is σ = 2556385842. Its totient is φ = 2556385840.

The previous prime is 2556385831. The next prime is 2556385859. The reversal of 2556385841 is 1485836552.

2556385841 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., 2538144400 + 18241441 = 50380^2 + 4271^2 .

It is a cyclic number.

It is not a de Polignac number, because 2556385841 - 2¹⁴ = 2556369457 is a prime.

It is not a weakly prime, because it can be changed into another prime (2556385801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278192920 + 1278192921.

It is an arithmetic number, because the mean of its divisors is an integer number (1278192921).

Almost surely, 2^2556385841 is an apocalyptic number.

It is an amenable number.

2556385841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556385841 is an equidigital number, since it uses as much as digits as its factorization.

2556385841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152000, while the sum is 47.

The square root of 2556385841 is about 50560.7144035762. The cubic root of 2556385841 is about 1367.3366911364.

The spelling of 2556385841 in words is "two billion, five hundred fifty-six million, three hundred eighty-five thousand, eight hundred forty-one".