23855 has 8 divisors (see below), whose sum is σ = 30912. Its totient is φ = 17568.

The previous prime is 23833. The next prime is 23857. The reversal of 23855 is 55832.

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 23855 - 2⁸ = 23599 is a prime.

It is a super-2 number, since 2×23855² = 1138122050, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 23855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23857) 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, 119 + ... + 248.

It is an arithmetic number, because the mean of its divisors is an integer number (3864).

2²³⁸⁵⁵ is an apocalyptic number.

23855 is a deficient number, since it is larger than the sum of its proper divisors (7057).

23855 is a wasteful number, since it uses less digits than its factorization.

23855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

The product of its digits is 1200, while the sum is 23.

The square root of 23855 is about 154.4506393642. The cubic root of 23855 is about 28.7867834162.

Subtracting from 23855 its sum of digits (23), we obtain a palindrome (23832).

It can be divided in two parts, 23 and 855, that added together give a palindrome (878).

The spelling of 23855 in words is "twenty-three thousand, eight hundred fifty-five".