255306 has 16 divisors (see below), whose sum is σ = 540864. Its totient is φ = 80064.

The previous prime is 255259. The next prime is 255313. The reversal of 255306 is 603552.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255306.

It is an unprimeable number.

255306 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150 + ... + 1353.

It is an arithmetic number, because the mean of its divisors is an integer number (33804).

2²⁵⁵³⁰⁶ is an apocalyptic number.

255306 is an abundant number, since it is smaller than the sum of its proper divisors (285558).

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

255306 is a wasteful number, since it uses less digits than its factorization.

255306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 255306 is about 505.2781412252. The cubic root of 255306 is about 63.4386122173.

Adding to 255306 its reverse (603552), we get a palindrome (858858).

It can be divided in two parts, 255 and 306, that added together give a triangular number (561 = T₃₃).

The spelling of 255306 in words is "two hundred fifty-five thousand, three hundred six".