2555617291 has 2 divisors, whose sum is σ = 2555617292. Its totient is φ = 2555617290.

The previous prime is 2555617271. The next prime is 2555617297. The reversal of 2555617291 is 1927165552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2555617291 - 2²⁵ = 2522062859 is a prime.

It is not a weakly prime, because it can be changed into another prime (2555617297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277808645 + 1277808646.

It is an arithmetic number, because the mean of its divisors is an integer number (1277808646).

Almost surely, 2^2555617291 is an apocalyptic number.

2555617291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555617291 is an equidigital number, since it uses as much as digits as its factorization.

2555617291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 43.

The square root of 2555617291 is about 50553.1135638548. The cubic root of 2555617291 is about 1367.1996523627.

The spelling of 2555617291 in words is "two billion, five hundred fifty-five million, six hundred seventeen thousand, two hundred ninety-one".