11055881 has 4 divisors (see below), whose sum is σ = 11082564. Its totient is φ = 11029200.

The previous prime is 11055851. The next prime is 11055887. The reversal of 11055881 is 18855011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60025 + 10995856 = 245^2 + 3316^2 .

It is a cyclic number.

It is not a de Polignac number, because 11055881 - 2⁶ = 11055817 is a prime.

It is a super-2 number, since 2×11055881² = 244465009372322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11055887) 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, 12710 + ... + 13551.

It is an arithmetic number, because the mean of its divisors is an integer number (2770641).

Almost surely, 2^11055881 is an apocalyptic number.

It is an amenable number.

11055881 is a deficient number, since it is larger than the sum of its proper divisors (26683).

11055881 is an equidigital number, since it uses as much as digits as its factorization.

11055881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26682.

The product of its (nonzero) digits is 1600, while the sum is 29.

The square root of 11055881 is about 3325.0384960178. The cubic root of 11055881 is about 222.7739738301.

The spelling of 11055881 in words is "eleven million, fifty-five thousand, eight hundred eighty-one".