255938 has 8 divisors (see below), whose sum is σ = 389388. Its totient is φ = 126144.

The previous prime is 255923. The next prime is 255947. The reversal of 255938 is 839552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 237169 + 18769 = 487^2 + 137^2 .

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

It is a d-powerful number, because it can be written as 2⁴ + 5 + 9⁵ + 5⁶ + 3¹¹ + 8⁴ .

It is a congruent number.

It is an unprimeable 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, 731 + ... + 1022.

2²⁵⁵⁹³⁸ is an apocalyptic number.

255938 is a deficient number, since it is larger than the sum of its proper divisors (133450).

255938 is a wasteful number, since it uses less digits than its factorization.

255938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828.

The product of its digits is 10800, while the sum is 32.

The square root of 255938 is about 505.9031527872. The cubic root of 255938 is about 63.4909156823.

Adding to 255938 its sum of digits (32), we get a triangular number (255970 = T₇₁₅).

The spelling of 255938 in words is "two hundred fifty-five thousand, nine hundred thirty-eight".