2555581247 has 2 divisors, whose sum is σ = 2555581248. Its totient is φ = 2555581246.

The previous prime is 2555581241. The next prime is 2555581261. The reversal of 2555581247 is 7421855552.

2555581247 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 is a cyclic number.

It is not a de Polignac number, because 2555581247 - 2⁶ = 2555581183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2555581198 and 2555581207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555581241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277790623 + 1277790624.

It is an arithmetic number, because the mean of its divisors is an integer number (1277790624).

Almost surely, 2^2555581247 is an apocalyptic number.

2555581247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555581247 is an equidigital number, since it uses as much as digits as its factorization.

2555581247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560000, while the sum is 44.

The square root of 2555581247 is about 50552.7570662570. The cubic root of 2555581247 is about 1367.1932247472.

The spelling of 2555581247 in words is "two billion, five hundred fifty-five million, five hundred eighty-one thousand, two hundred forty-seven".