255366 has 16 divisors (see below), whose sum is σ = 567600. Its totient is φ = 85104.

The previous prime is 255361. The next prime is 255371. The reversal of 255366 is 663552.

It is an interprime number because it is at equal distance from previous prime (255361) and next prime (255371).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255361) by changing a digit.

255366 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, 2311 + ... + 2418.

It is an arithmetic number, because the mean of its divisors is an integer number (35475).

2²⁵⁵³⁶⁶ is an apocalyptic number.

255366 is an abundant number, since it is smaller than the sum of its proper divisors (312234).

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

255366 is a wasteful number, since it uses less digits than its factorization.

255366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4740 (or 4734 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 255366 is about 505.3375109766. The cubic root of 255366 is about 63.4435814419.

The spelling of 255366 in words is "two hundred fifty-five thousand, three hundred sixty-six".