305855 has 16 divisors (see below), whose sum is σ = 411264. Its totient is φ = 216480.

The previous prime is 305849. The next prime is 305857. The reversal of 305855 is 558503.

It is not a de Polignac number, because 305855 - 2⁴ = 305839 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12 and base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 305855.

It is not an unprimeable number, because it can be changed into a prime (305857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3644 + ... + 3726.

It is an arithmetic number, because the mean of its divisors is an integer number (25704).

2³⁰⁵⁸⁵⁵ is an apocalyptic number.

305855 is a deficient number, since it is larger than the sum of its proper divisors (105409).

305855 is a wasteful number, since it uses less digits than its factorization.

305855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 305855 is about 553.0415897561. The cubic root of 305855 is about 67.3759954670.

It can be divided in two parts, 3058 and 55, that added together give a palindrome (3113).

The spelling of 305855 in words is "three hundred five thousand, eight hundred fifty-five".