2255671261 has 2 divisors, whose sum is σ = 2255671262. Its totient is φ = 2255671260.

The previous prime is 2255671247. The next prime is 2255671331. The reversal of 2255671261 is 1621765522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1825938361 + 429732900 = 42731^2 + 20730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2255671261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2255671261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2255671861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127835630 + 1127835631.

It is an arithmetic number, because the mean of its divisors is an integer number (1127835631).

Almost surely, 2^2255671261 is an apocalyptic number.

It is an amenable number.

2255671261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2255671261 is an equidigital number, since it uses as much as digits as its factorization.

2255671261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 2255671261 is about 47493.9076198200. The cubic root of 2255671261 is about 1311.4707295709.

The spelling of 2255671261 in words is "two billion, two hundred fifty-five million, six hundred seventy-one thousand, two hundred sixty-one".