11572091 has 4 divisors (see below), whose sum is σ = 11607384. Its totient is φ = 11536800.

The previous prime is 11572079. The next prime is 11572129. The reversal of 11572091 is 19027511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19027511 = 541 ⋅35171.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11572091 is a prime.

It is a super-2 number, since 2×11572091² = 267826580224562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11572091.

It is not an unprimeable number, because it can be changed into a prime (11572051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17150 + ... + 17811.

It is an arithmetic number, because the mean of its divisors is an integer number (2901846).

Almost surely, 2^11572091 is an apocalyptic number.

11572091 is a deficient number, since it is larger than the sum of its proper divisors (35293).

11572091 is an equidigital number, since it uses as much as digits as its factorization.

11572091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35292.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 11572091 is about 3401.7776235374. Note that the first 3 decimals coincide. The cubic root of 11572091 is about 226.1885483728.

The spelling of 11572091 in words is "eleven million, five hundred seventy-two thousand, ninety-one".