11189055 has 32 divisors (see below), whose sum is σ = 18662400. Its totient is φ = 5720192.

The previous prime is 11189053. The next prime is 11189069. The reversal of 11189055 is 55098111.

It is a cyclic number.

It is not a de Polignac number, because 11189055 - 2¹ = 11189053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11189051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41461 + ... + 41729.

It is an arithmetic number, because the mean of its divisors is an integer number (583200).

Almost surely, 2^11189055 is an apocalyptic number.

11189055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11189055 is a deficient number, since it is larger than the sum of its proper divisors (7473345).

11189055 is a wasteful number, since it uses less digits than its factorization.

11189055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383.

The product of its (nonzero) digits is 1800, while the sum is 30.

The square root of 11189055 is about 3345.0044843019. The cubic root of 11189055 is about 223.6648834099.

Subtracting from 11189055 its sum of digits (30), we obtain a square (11189025 = 3345²).

The spelling of 11189055 in words is "eleven million, one hundred eighty-nine thousand, fifty-five".