11565057 has 8 divisors (see below), whose sum is σ = 17622976. Its totient is φ = 6608592.

The previous prime is 11565041. The next prime is 11565061. The reversal of 11565057 is 75056511.

11565057 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 not a de Polignac number, because 11565057 - 2⁴ = 11565041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11565017) 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, 275338 + ... + 275379.

It is an arithmetic number, because the mean of its divisors is an integer number (2202872).

Almost surely, 2^11565057 is an apocalyptic number.

It is an amenable number.

11565057 is a deficient number, since it is larger than the sum of its proper divisors (6057919).

11565057 is an equidigital number, since it uses as much as digits as its factorization.

11565057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550727.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 11565057 is about 3400.7435951568. The cubic root of 11565057 is about 226.1427101367.

The spelling of 11565057 in words is "eleven million, five hundred sixty-five thousand, fifty-seven".