11056591 has 8 divisors (see below), whose sum is σ = 13608224. Its totient is φ = 8748000.

The previous prime is 11056589. The next prime is 11056601. The reversal of 11056591 is 19565011.

11056591 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 5-Lehmer number, since φ(11056591) divides (11056591-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 11056591 - 2¹ = 11056589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11056501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60660 + ... + 60841.

It is an arithmetic number, because the mean of its divisors is an integer number (1701028).

Almost surely, 2^11056591 is an apocalyptic number.

11056591 is a deficient number, since it is larger than the sum of its proper divisors (2551633).

11056591 is a wasteful number, since it uses less digits than its factorization.

11056591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121521.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 11056591 is about 3325.1452599849. The cubic root of 11056591 is about 222.7787425179.

The spelling of 11056591 in words is "eleven million, fifty-six thousand, five hundred ninety-one".