255652987 has 8 divisors (see below), whose sum is σ = 271112832. Its totient is φ = 240240000.

The previous prime is 255652979. The next prime is 255652993. The reversal of 255652987 is 789256552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255652987 - 2³ = 255652979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255652987.

It is not an unprimeable number, because it can be changed into a prime (255652937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139 + ... + 22612.

It is an arithmetic number, because the mean of its divisors is an integer number (33889104).

Almost surely, 2^255652987 is an apocalyptic number.

255652987 is a deficient number, since it is larger than the sum of its proper divisors (15459845).

255652987 is a wasteful number, since it uses less digits than its factorization.

255652987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23429.

The product of its digits is 1512000, while the sum is 49.

The square root of 255652987 is about 15989.1521663908. The cubic root of 255652987 is about 634.6733906392.

The spelling of 255652987 in words is "two hundred fifty-five million, six hundred fifty-two thousand, nine hundred eighty-seven".