255567 has 8 divisors (see below), whose sum is σ = 367024. Its totient is φ = 157248.

The previous prime is 255551. The next prime is 255571. The reversal of 255567 is 765552.

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

It is not a de Polignac number, because 255567 - 2⁴ = 255551 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3238 + ... + 3315.

It is an arithmetic number, because the mean of its divisors is an integer number (45878).

2²⁵⁵⁵⁶⁷ is an apocalyptic number.

255567 is a deficient number, since it is larger than the sum of its proper divisors (111457).

255567 is a wasteful number, since it uses less digits than its factorization.

255567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6569.

The product of its digits is 10500, while the sum is 30.

The square root of 255567 is about 505.5363488415. The cubic root of 255567 is about 63.4602226753.

The spelling of 255567 in words is "two hundred fifty-five thousand, five hundred sixty-seven".