255784117 has 8 divisors (see below), whose sum is σ = 263273472. Its totient is φ = 248354400.

The previous prime is 255784079. The next prime is 255784121. The reversal of 255784117 is 711487552.

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 255784117 - 2¹¹ = 255782069 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 255784117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255784187) 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, 6133 + ... + 23434.

It is an arithmetic number, because the mean of its divisors is an integer number (32909184).

Almost surely, 2^255784117 is an apocalyptic number.

It is an amenable number.

255784117 is a deficient number, since it is larger than the sum of its proper divisors (7489355).

255784117 is a wasteful number, since it uses less digits than its factorization.

255784117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29819.

The product of its digits is 78400, while the sum is 40.

The square root of 255784117 is about 15993.2522333639. The cubic root of 255784117 is about 634.7818847057.

The spelling of 255784117 in words is "two hundred fifty-five million, seven hundred eighty-four thousand, one hundred seventeen".