255535560 has 320 divisors, whose sum is σ = 1034985600. Its totient is φ = 55240704.

The previous prime is 255535537. The next prime is 255535591. The reversal of 255535560 is 65535552.

255535560 is a `hidden beast` number, since 2 + 55 + 53 + 556 + 0 = 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 79 ways as a sum of consecutive naturals, for example, 430624 + ... + 431216.

It is an arithmetic number, because the mean of its divisors is an integer number (3234330).

Almost surely, 2^255535560 is an apocalyptic number.

255535560 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 255535560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517492800).

255535560 is an abundant number, since it is smaller than the sum of its proper divisors (779450040).

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

255535560 is a wasteful number, since it uses less digits than its factorization.

255535560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 36.

The square root of 255535560 is about 15985.4796612426. The cubic root of 255535560 is about 634.5762026413.

It can be divided in two parts, 25553 and 5560, that added together give a palindrome (31113).

The spelling of 255535560 in words is "two hundred fifty-five million, five hundred thirty-five thousand, five hundred sixty".