11538565 has 8 divisors (see below), whose sum is σ = 14041728. Its totient is φ = 9100560.

The previous prime is 11538557. The next prime is 11538601. The reversal of 11538565 is 56583511.

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

It is not a de Polignac number, because 11538565 - 2³ = 11538557 is a prime.

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 11538565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15897 + ... + 16606.

It is an arithmetic number, because the mean of its divisors is an integer number (1755216).

Almost surely, 2^11538565 is an apocalyptic number.

It is an amenable number.

11538565 is a deficient number, since it is larger than the sum of its proper divisors (2503163).

11538565 is an equidigital number, since it uses as much as digits as its factorization.

11538565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32579.

The product of its digits is 18000, while the sum is 34.

The square root of 11538565 is about 3396.8463315258. The cubic root of 11538565 is about 225.9699035809.

The spelling of 11538565 in words is "eleven million, five hundred thirty-eight thousand, five hundred sixty-five".