2256911 has 2 divisors, whose sum is σ = 2256912. Its totient is φ = 2256910.

The previous prime is 2256901. The next prime is 2256913. The reversal of 2256911 is 1196522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2256911 - 2⁶ = 2256847 is a prime.

Together with 2256913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2256913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128455 + 1128456.

It is an arithmetic number, because the mean of its divisors is an integer number (1128456).

2^2256911 is an apocalyptic number.

2256911 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256911 is an equidigital number, since it uses as much as digits as its factorization.

2256911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 2256911 is about 1502.3019004182. The cubic root of 2256911 is about 131.1710951283.

The spelling of 2256911 in words is "two million, two hundred fifty-six thousand, nine hundred eleven".