255591960 has 64 divisors (see below), whose sum is σ = 825763680. Its totient is φ = 62914560.

The previous prime is 255591887. The next prime is 255591979. The reversal of 255591960 is 69195552.

It is a zygodrome in base 2.

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, 80361 + ... + 83480.

Almost surely, 2^255591960 is an apocalyptic number.

255591960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255591960 is an abundant number, since it is smaller than the sum of its proper divisors (570171720).

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

255591960 is a wasteful number, since it uses less digits than its factorization.

255591960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163868 (or 163864 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 42.

The square root of 255591960 is about 15987.2436648723. The cubic root of 255591960 is about 634.6228855962.

The spelling of 255591960 in words is "two hundred fifty-five million, five hundred ninety-one thousand, nine hundred sixty".