255388 has 18 divisors (see below), whose sum is σ = 520296. Its totient is φ = 109368.

The previous prime is 255383. The next prime is 255413. The reversal of 255388 is 883552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255383) by changing a digit.

255388 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 5 ways as a sum of consecutive naturals, for example, 456 + ... + 847.

2²⁵⁵³⁸⁸ is an apocalyptic number.

255388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

255388 is an abundant number, since it is smaller than the sum of its proper divisors (264908).

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

255388 is a wasteful number, since it uses less digits than its factorization.

255388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321 (or 1312 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 255388 is about 505.3592781378. The cubic root of 255388 is about 63.4454032960.

It can be divided in two parts, 25538 and 8, that multiplied together give a square (204304 = 452²).

The spelling of 255388 in words is "two hundred fifty-five thousand, three hundred eighty-eight".