255578813 has 8 divisors (see below), whose sum is σ = 293304000. Its totient is φ = 218157120.

The previous prime is 255578797. The next prime is 255578839. The reversal of 255578813 is 318875552.

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 255578813 - 2⁴ = 255578797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255578863) 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, 74063 + ... + 77436.

It is an arithmetic number, because the mean of its divisors is an integer number (36663000).

Almost surely, 2^255578813 is an apocalyptic number.

It is an amenable number.

255578813 is a deficient number, since it is larger than the sum of its proper divisors (37725187).

255578813 is a wasteful number, since it uses less digits than its factorization.

255578813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151747.

The product of its digits is 336000, while the sum is 44.

The square root of 255578813 is about 15986.8324880196. The cubic root of 255578813 is about 634.6120042808.

The spelling of 255578813 in words is "two hundred fifty-five million, five hundred seventy-eight thousand, eight hundred thirteen".