11491055 has 4 divisors (see below), whose sum is σ = 13789272. Its totient is φ = 9192840.

The previous prime is 11491043. The next prime is 11491061. The reversal of 11491055 is 55019411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55019411 = 4159 ⋅13229.

It is not a de Polignac number, because 11491055 - 2⁸ = 11490799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1149101 + ... + 1149110.

It is an arithmetic number, because the mean of its divisors is an integer number (3447318).

Almost surely, 2^11491055 is an apocalyptic number.

11491055 is a deficient number, since it is larger than the sum of its proper divisors (2298217).

11491055 is an equidigital number, since it uses as much as digits as its factorization.

11491055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298216.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 11491055 is about 3389.8458667025. The cubic root of 11491055 is about 225.6593335106.

The spelling of 11491055 in words is "eleven million, four hundred ninety-one thousand, fifty-five".