11256491 has 2 divisors, whose sum is σ = 11256492. Its totient is φ = 11256490.

The previous prime is 11256481. The next prime is 11256517. The reversal of 11256491 is 19465211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11256491 is a prime.

It is not a weakly prime, because it can be changed into another prime (11256451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5628245 + 5628246.

It is an arithmetic number, because the mean of its divisors is an integer number (5628246).

Almost surely, 2^11256491 is an apocalyptic number.

11256491 is a deficient number, since it is larger than the sum of its proper divisors (1).

11256491 is an equidigital number, since it uses as much as digits as its factorization.

11256491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 29.

The square root of 11256491 is about 3355.0694478654. The cubic root of 11256491 is about 224.1133235582.

The spelling of 11256491 in words is "eleven million, two hundred fifty-six thousand, four hundred ninety-one".