255944 has 32 divisors (see below), whose sum is σ = 544320. Its totient is φ = 111936.

The previous prime is 255923. The next prime is 255947. The reversal of 255944 is 449552.

It is a happy number.

It is a super-2 number, since 2×255944² = 131014662272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255947) 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 7 ways as a sum of consecutive naturals, for example, 2339 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2²⁵⁵⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272160).

255944 is an abundant number, since it is smaller than the sum of its proper divisors (288376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255944 is a wasteful number, since it uses less digits than its factorization.

255944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 145 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 255944 is about 505.9090827412. The cubic root of 255944 is about 63.4914118214.

The spelling of 255944 in words is "two hundred fifty-five thousand, nine hundred forty-four".