255166 has 4 divisors (see below), whose sum is σ = 382752. Its totient is φ = 127582.

The previous prime is 255149. The next prime is 255173. The reversal of 255166 is 661552.

255166 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 255166.

It is a congruent number.

It is an unprimeable number.

255166 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 as a sum of consecutive naturals, namely, 63790 + ... + 63793.

It is an arithmetic number, because the mean of its divisors is an integer number (95688).

2²⁵⁵¹⁶⁶ is an apocalyptic number.

255166 is a deficient number, since it is larger than the sum of its proper divisors (127586).

255166 is a wasteful number, since it uses less digits than its factorization.

255166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127585.

The product of its digits is 1800, while the sum is 25.

The square root of 255166 is about 505.1395846694. The cubic root of 255166 is about 63.4270143314.

The spelling of 255166 in words is "two hundred fifty-five thousand, one hundred sixty-six".