255968513 has 8 divisors (see below), whose sum is σ = 269930400. Its totient is φ = 242055648.

The previous prime is 255968509. The next prime is 255968527. The reversal of 255968513 is 315869552.

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 255968513 - 2² = 255968509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255968563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268 + ... + 22661.

It is an arithmetic number, because the mean of its divisors is an integer number (33741300).

Almost surely, 2^255968513 is an apocalyptic number.

It is an amenable number.

255968513 is a deficient number, since it is larger than the sum of its proper divisors (13961887).

255968513 is a wasteful number, since it uses less digits than its factorization.

255968513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24511.

The product of its digits is 324000, while the sum is 44.

The square root of 255968513 is about 15999.0160009921. The cubic root of 255968513 is about 634.9343871694.

The spelling of 255968513 in words is "two hundred fifty-five million, nine hundred sixty-eight thousand, five hundred thirteen".