11256811 has 4 divisors (see below), whose sum is σ = 11290552. Its totient is φ = 11223072.

The previous prime is 11256799. The next prime is 11256827. The reversal of 11256811 is 11865211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11256811 - 2⁵ = 11256779 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11256851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16365 + ... + 17038.

It is an arithmetic number, because the mean of its divisors is an integer number (2822638).

Almost surely, 2^11256811 is an apocalyptic number.

11256811 is a deficient number, since it is larger than the sum of its proper divisors (33741).

11256811 is an equidigital number, since it uses as much as digits as its factorization.

11256811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33740.

The product of its digits is 480, while the sum is 25.

The square root of 11256811 is about 3355.1171365543. The cubic root of 11256811 is about 224.1154472391.

Subtracting 11256811 from its reverse (11865211), we obtain a square (608400 = 780²).

The spelling of 11256811 in words is "eleven million, two hundred fifty-six thousand, eight hundred eleven".