11574221 has 4 divisors (see below), whose sum is σ = 12077472. Its totient is φ = 11070972.

The previous prime is 11574217. The next prime is 11574257. The reversal of 11574221 is 12247511.

11574221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11574221 - 2² = 11574217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 503227 = 11574221 / (1 + 1 + 5 + 7 + 4 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11574271) 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, 251591 + ... + 251636.

It is an arithmetic number, because the mean of its divisors is an integer number (3019368).

Almost surely, 2^11574221 is an apocalyptic number.

It is an amenable number.

11574221 is a deficient number, since it is larger than the sum of its proper divisors (503251).

11574221 is an equidigital number, since it uses as much as digits as its factorization.

11574221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503250.

The product of its digits is 560, while the sum is 23.

The square root of 11574221 is about 3402.0906807432. The cubic root of 11574221 is about 226.2024252095.

The spelling of 11574221 in words is "eleven million, five hundred seventy-four thousand, two hundred twenty-one".