255505 has 8 divisors (see below), whose sum is σ = 309672. Its totient is φ = 202368.

The previous prime is 255503. The next prime is 255511. The reversal of 255505 is 505552.

255505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 36481 + 219024 = 191^2 + 468^2 .

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 255505 - 2¹ = 255503 is a prime.

It is an Ulam number.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 499 + ... + 871.

It is an arithmetic number, because the mean of its divisors is an integer number (38709).

2²⁵⁵⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

255505 is a deficient number, since it is larger than the sum of its proper divisors (54167).

255505 is a wasteful number, since it uses less digits than its factorization.

255505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its (nonzero) digits is 1250, while the sum is 22.

The square root of 255505 is about 505.4750241110. The cubic root of 255505 is about 63.4550904894.

Subtracting 255505 from its reverse (505552), we obtain a cube (250047 = 63³).

The spelling of 255505 in words is "two hundred fifty-five thousand, five hundred five".