255931560 has 96 divisors (see below), whose sum is σ = 842400000. Its totient is φ = 67377024.

The previous prime is 255931547. The next prime is 255931597. The reversal of 255931560 is 65139552.

255931560 is a `hidden beast` number, since 2 + 5 + 5 + 93 + 1 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23941 + ... + 32939.

It is an arithmetic number, because the mean of its divisors is an integer number (8775000).

Almost surely, 2^255931560 is an apocalyptic number.

255931560 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 255931560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421200000).

255931560 is an abundant number, since it is smaller than the sum of its proper divisors (586468440).

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

255931560 is a wasteful number, since it uses less digits than its factorization.

255931560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9095 (or 9088 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The square root of 255931560 is about 15997.8611070355. The cubic root of 255931560 is about 634.9038315107.

The spelling of 255931560 in words is "two hundred fifty-five million, nine hundred thirty-one thousand, five hundred sixty".