255864013 has 16 divisors (see below), whose sum is σ = 279532800. Its totient is φ = 233271360.

The previous prime is 255864001. The next prime is 255864023. The reversal of 255864013 is 310468552.

It is not a de Polignac number, because 255864013 - 2⁹ = 255863501 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 255864013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255864023) 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, 231420 + ... + 232522.

It is an arithmetic number, because the mean of its divisors is an integer number (17470800).

Almost surely, 2^255864013 is an apocalyptic number.

It is an amenable number.

255864013 is a deficient number, since it is larger than the sum of its proper divisors (23668787).

255864013 is a wasteful number, since it uses less digits than its factorization.

255864013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 255864013 is about 15995.7498417548. The cubic root of 255864013 is about 634.8479707140.

The spelling of 255864013 in words is "two hundred fifty-five million, eight hundred sixty-four thousand, thirteen".