13857265 has 8 divisors (see below), whose sum is σ = 16829568. Its totient is φ = 10951920.

The previous prime is 13857253. The next prime is 13857269. The reversal of 13857265 is 56275831.

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

It is not a de Polignac number, because 13857265 - 2⁹ = 13856753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13857269) 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, 16281 + ... + 17110.

It is an arithmetic number, because the mean of its divisors is an integer number (2103696).

Almost surely, 2^13857265 is an apocalyptic number.

It is an amenable number.

13857265 is a deficient number, since it is larger than the sum of its proper divisors (2972303).

13857265 is an equidigital number, since it uses as much as digits as its factorization.

13857265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33479.

The product of its digits is 50400, while the sum is 37.

The square root of 13857265 is about 3722.5347547068. The cubic root of 13857265 is about 240.1923515828.

The spelling of 13857265 in words is "thirteen million, eight hundred fifty-seven thousand, two hundred sixty-five".