255318 has 16 divisors (see below), whose sum is σ = 583680. Its totient is φ = 72936.

The previous prime is 255313. The next prime is 255329. The reversal of 255318 is 813552.

It is a super-2 number, since 2×255318² = 130374562248, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁵ + 5 + 3¹¹ + 5⁷ + 1 + 8 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255313) by changing a digit.

255318 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2998 + ... + 3081.

It is an arithmetic number, because the mean of its divisors is an integer number (36480).

2²⁵⁵³¹⁸ is an apocalyptic number.

255318 is an abundant number, since it is smaller than the sum of its proper divisors (328362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255318 is a wasteful number, since it uses less digits than its factorization.

255318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091.

The product of its digits is 1200, while the sum is 24.

The square root of 255318 is about 505.2900157335. The cubic root of 255318 is about 63.4396061245.

It can be divided in two parts, 2553 and 18, that multiplied together give a palindrome (45954).

The spelling of 255318 in words is "two hundred fifty-five thousand, three hundred eighteen".