255355140 has 48 divisors (see below), whose sum is σ = 721340928. Its totient is φ = 67490304.

The previous prime is 255355129. The next prime is 255355141. The reversal of 255355140 is 41553552.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 255355098 and 255355107.

It is not an unprimeable number, because it can be changed into a prime (255355141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12052 + ... + 25611.

It is an arithmetic number, because the mean of its divisors is an integer number (15027936).

Almost surely, 2^255355140 is an apocalyptic number.

255355140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255355140 is an abundant number, since it is smaller than the sum of its proper divisors (465985788).

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

255355140 is a wasteful number, since it uses less digits than its factorization.

255355140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37788 (or 37786 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 255355140 is about 15979.8354184266. The cubic root of 255355140 is about 634.4268206998.

The spelling of 255355140 in words is "two hundred fifty-five million, three hundred fifty-five thousand, one hundred forty".