13855165 has 4 divisors (see below), whose sum is σ = 16626204. Its totient is φ = 11084128.

The previous prime is 13855151. The next prime is 13855169. The reversal of 13855165 is 56155831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8421604 + 5433561 = 2902^2 + 2331^2 .

It is a cyclic number.

It is not a de Polignac number, because 13855165 - 2⁹ = 13854653 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 13855165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13855169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385512 + ... + 1385521.

It is an arithmetic number, because the mean of its divisors is an integer number (4156551).

Almost surely, 2^13855165 is an apocalyptic number.

It is an amenable number.

13855165 is a deficient number, since it is larger than the sum of its proper divisors (2771039).

13855165 is an equidigital number, since it uses as much as digits as its factorization.

13855165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771038.

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

The square root of 13855165 is about 3722.2526781507. The cubic root of 13855165 is about 240.1802176487.

The spelling of 13855165 in words is "thirteen million, eight hundred fifty-five thousand, one hundred sixty-five".