12855 has 8 divisors (see below), whose sum is σ = 20592. Its totient is φ = 6848.

The previous prime is 12853. The next prime is 12889. The reversal of 12855 is 55821.

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

It is a cyclic number.

It is not a de Polignac number, because 12855 - 2¹ = 12853 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12853) 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, 414 + ... + 443.

It is an arithmetic number, because the mean of its divisors is an integer number (2574).

2¹²⁸⁵⁵ is an apocalyptic number.

12855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12855 is a deficient number, since it is larger than the sum of its proper divisors (7737).

12855 is an equidigital number, since it uses as much as digits as its factorization.

12855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its digits is 400, while the sum is 21.

The square root of 12855 is about 113.3798923972. The cubic root of 12855 is about 23.4255984018.

The spelling of 12855 in words is "twelve thousand, eight hundred fifty-five".