255009 has 8 divisors (see below), whose sum is σ = 342720. Its totient is φ = 168656.

The previous prime is 255007. The next prime is 255019. The reversal of 255009 is 900552.

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

It is a cyclic number.

It is not a de Polignac number, because 255009 - 2¹ = 255007 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255009.

It is not an unprimeable number, because it can be changed into a prime (255007) 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, 247 + ... + 755.

It is an arithmetic number, because the mean of its divisors is an integer number (42840).

2²⁵⁵⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

255009 is a deficient number, since it is larger than the sum of its proper divisors (87711).

255009 is a wasteful number, since it uses less digits than its factorization.

255009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 255009 is about 504.9841581674. The cubic root of 255009 is about 63.4140030834.

The spelling of 255009 in words is "two hundred fifty-five thousand, nine".