11055191 has 4 divisors (see below), whose sum is σ = 12634512. Its totient is φ = 9475872.

The previous prime is 11055173. The next prime is 11055211. The reversal of 11055191 is 19155011.

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

It is a de Polignac number, because none of the positive numbers 2^k-11055191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11055391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789650 + ... + 789663.

It is an arithmetic number, because the mean of its divisors is an integer number (3158628).

Almost surely, 2^11055191 is an apocalyptic number.

11055191 is a deficient number, since it is larger than the sum of its proper divisors (1579321).

11055191 is an equidigital number, since it uses as much as digits as its factorization.

11055191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579320.

The product of its (nonzero) digits is 225, while the sum is 23.

The square root of 11055191 is about 3324.9347362016. The cubic root of 11055191 is about 222.7693392759.

The spelling of 11055191 in words is "eleven million, fifty-five thousand, one hundred ninety-one".