255231560 has 64 divisors (see below), whose sum is σ = 619315200. Its totient is φ = 94348800.

The previous prime is 255231553. The next prime is 255231569. The reversal of 255231560 is 65132552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (255231569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27065 + ... + 35255.

It is an arithmetic number, because the mean of its divisors is an integer number (9676800).

Almost surely, 2^255231560 is an apocalyptic number.

255231560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255231560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309657600).

255231560 is an abundant number, since it is smaller than the sum of its proper divisors (364083640).

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

255231560 is a wasteful number, since it uses less digits than its factorization.

255231560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8262 (or 8258 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 255231560 is about 15975.9682022718. The cubic root of 255231560 is about 634.3244598367.

The spelling of 255231560 in words is "two hundred fifty-five million, two hundred thirty-one thousand, five hundred sixty".