2255678791 has 2 divisors, whose sum is σ = 2255678792. Its totient is φ = 2255678790.

The previous prime is 2255678771. The next prime is 2255678807. The reversal of 2255678791 is 1978765522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2255678791 - 2⁵ = 2255678759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2255678741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127839395 + 1127839396.

It is an arithmetic number, because the mean of its divisors is an integer number (1127839396).

Almost surely, 2^2255678791 is an apocalyptic number.

2255678791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2255678791 is an equidigital number, since it uses as much as digits as its factorization.

2255678791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 52.

The square root of 2255678791 is about 47493.9868930794. The cubic root of 2255678791 is about 1311.4721889094.

The spelling of 2255678791 in words is "two billion, two hundred fifty-five million, six hundred seventy-eight thousand, seven hundred ninety-one".