11261091 has 16 divisors (see below), whose sum is σ = 16317440. Its totient is φ = 6881760.

The previous prime is 11261071. The next prime is 11261113. The reversal of 11261091 is 19016211.

It is not a de Polignac number, because 11261091 - 2¹¹ = 11259043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11261011) 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 in 15 ways as a sum of consecutive naturals, for example, 1420 + ... + 4953.

It is an arithmetic number, because the mean of its divisors is an integer number (1019840).

Almost surely, 2^11261091 is an apocalyptic number.

11261091 is a deficient number, since it is larger than the sum of its proper divisors (5056349).

11261091 is a wasteful number, since it uses less digits than its factorization.

11261091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 11261091 is about 3355.7549076177. The cubic root of 11261091 is about 224.1438476025.

The spelling of 11261091 in words is "eleven million, two hundred sixty-one thousand, ninety-one".