255506 has 8 divisors (see below), whose sum is σ = 392304. Its totient is φ = 124740.

The previous prime is 255503. The next prime is 255511. The reversal of 255506 is 605552.

255506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (255503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400 + ... + 1571.

It is an arithmetic number, because the mean of its divisors is an integer number (49038).

2²⁵⁵⁵⁰⁶ is an apocalyptic number.

255506 is a deficient number, since it is larger than the sum of its proper divisors (136798).

255506 is a wasteful number, since it uses less digits than its factorization.

255506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 255506 is about 505.4760132786. The cubic root of 255506 is about 63.4551732732.

The spelling of 255506 in words is "two hundred fifty-five thousand, five hundred six".