255270990 has 32 divisors (see below), whose sum is σ = 659778336. Its totient is φ = 62835840.

The previous prime is 255270979. The next prime is 255271007. The reversal of 255270990 is 99072552.

255270990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326881 + ... + 327660.

It is an arithmetic number, because the mean of its divisors is an integer number (20618073).

Almost surely, 2^255270990 is an apocalyptic number.

255270990 is an abundant number, since it is smaller than the sum of its proper divisors (404507346).

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

255270990 is a wasteful number, since it uses less digits than its factorization.

255270990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654564.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 255270990 is about 15977.2021956286. The cubic root of 255270990 is about 634.3571231504.

The spelling of 255270990 in words is "two hundred fifty-five million, two hundred seventy thousand, nine hundred ninety".