255206 has 8 divisors (see below), whose sum is σ = 437520. Its totient is φ = 109368.

The previous prime is 255197. The next prime is 255209. The reversal of 255206 is 602552.

255206 = 8² + 9² + ... + 91².

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255209) by changing a digit.

255206 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 3 ways as a sum of consecutive naturals, for example, 9101 + ... + 9128.

It is an arithmetic number, because the mean of its divisors is an integer number (54690).

2²⁵⁵²⁰⁶ is an apocalyptic number.

255206 is a deficient number, since it is larger than the sum of its proper divisors (182314).

255206 is a wasteful number, since it uses less digits than its factorization.

255206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18238.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 255206 is about 505.1791761346. The cubic root of 255206 is about 63.4303284458.

Adding to 255206 its reverse (602552), we get a palindrome (857758).

The spelling of 255206 in words is "two hundred fifty-five thousand, two hundred six".