255542 has 8 divisors (see below), whose sum is σ = 438096. Its totient is φ = 109512.

The previous prime is 255523. The next prime is 255551. The reversal of 255542 is 245552.

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

It is a congruent number.

It is an unprimeable number.

255542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 9113 + ... + 9140.

It is an arithmetic number, because the mean of its divisors is an integer number (54762).

2²⁵⁵⁵⁴² is an apocalyptic number.

255542 is a deficient number, since it is larger than the sum of its proper divisors (182554).

255542 is a wasteful number, since it uses less digits than its factorization.

255542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18262.

The product of its digits is 2000, while the sum is 23.

The square root of 255542 is about 505.5116220227. The cubic root of 255542 is about 63.4581533454.

It can be divided in two parts, 255 and 542, that added together give a palindrome (797).

The spelling of 255542 in words is "two hundred fifty-five thousand, five hundred forty-two".