255615536 has 80 divisors (see below), whose sum is σ = 587774880. Its totient is φ = 106352640.

The previous prime is 255615533. The next prime is 255615551. The reversal of 255615536 is 635516552.

It is a super-3 number, since 3×255615536³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255615536.

It is not an unprimeable number, because it can be changed into a prime (255615533) 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, 109550 + ... + 111858.

It is an arithmetic number, because the mean of its divisors is an integer number (7347186).

Almost surely, 2^255615536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255615536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293887440).

255615536 is an abundant number, since it is smaller than the sum of its proper divisors (332159344).

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

255615536 is a wasteful number, since it uses less digits than its factorization.

255615536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382 (or 2376 counting only the distinct ones).

The product of its digits is 135000, while the sum is 38.

The square root of 255615536 is about 15987.9809857280. The cubic root of 255615536 is about 634.6423976981.

The spelling of 255615536 in words is "two hundred fifty-five million, six hundred fifteen thousand, five hundred thirty-six".