255140 has 12 divisors (see below), whose sum is σ = 535836. Its totient is φ = 102048.

The previous prime is 255137. The next prime is 255149. The reversal of 255140 is 41552.

255140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 119716 + 135424 = 346^2 + 368^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255140.

It is not an unprimeable number, because it can be changed into a prime (255149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6359 + ... + 6398.

It is an arithmetic number, because the mean of its divisors is an integer number (44653).

2²⁵⁵¹⁴⁰ is an apocalyptic number.

255140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255140 is an abundant number, since it is smaller than the sum of its proper divisors (280696).

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

255140 is a wasteful number, since it uses less digits than its factorization.

255140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12766 (or 12764 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 255140 is about 505.1138485530. The cubic root of 255140 is about 63.4248599712.

Adding to 255140 its reverse (41552), we get a palindrome (296692).

The spelling of 255140 in words is "two hundred fifty-five thousand, one hundred forty".