255539 has 4 divisors (see below), whose sum is σ = 261024. Its totient is φ = 250056.

The previous prime is 255523. The next prime is 255551. The reversal of 255539 is 935552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255539 - 2⁴ = 255523 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 5 + 5³ + 5⁷ + 3¹¹ + 9 .

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (255589) by changing a digit.

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, 2672 + ... + 2765.

It is an arithmetic number, because the mean of its divisors is an integer number (65256).

2²⁵⁵⁵³⁹ is an apocalyptic number.

255539 is a deficient number, since it is larger than the sum of its proper divisors (5485).

255539 is an equidigital number, since it uses as much as digits as its factorization.

255539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5484.

The product of its digits is 6750, while the sum is 29.

The square root of 255539 is about 505.5086547231. The cubic root of 255539 is about 63.4579050167.

The spelling of 255539 in words is "two hundred fifty-five thousand, five hundred thirty-nine".