13155965 has 8 divisors (see below), whose sum is σ = 15821568. Its totient is φ = 10501840.

The previous prime is 13155959. The next prime is 13156001. The reversal of 13155965 is 56955131.

It is a happy number.

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

It is not a de Polignac number, because 13155965 - 2²² = 8961661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101 + ... + 5130.

It is an arithmetic number, because the mean of its divisors is an integer number (1977696).

Almost surely, 2^13155965 is an apocalyptic number.

It is an amenable number.

13155965 is a deficient number, since it is larger than the sum of its proper divisors (2665603).

13155965 is an equidigital number, since it uses as much as digits as its factorization.

13155965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5739.

The product of its digits is 20250, while the sum is 35.

The square root of 13155965 is about 3627.1152449295. The cubic root of 13155965 is about 236.0700560477.

The spelling of 13155965 in words is "thirteen million, one hundred fifty-five thousand, nine hundred sixty-five".