255866511 has 8 divisors (see below), whose sum is σ = 343328944. Its totient is φ = 169490880.

The previous prime is 255866497. The next prime is 255866537. The reversal of 255866511 is 115668552.

255866511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 255866511 - 2⁶ = 255866447 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 255866511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255866551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271150 + ... + 272091.

It is an arithmetic number, because the mean of its divisors is an integer number (42916118).

Almost surely, 2^255866511 is an apocalyptic number.

255866511 is a deficient number, since it is larger than the sum of its proper divisors (87462433).

255866511 is a wasteful number, since it uses less digits than its factorization.

255866511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543401.

The product of its digits is 72000, while the sum is 39.

The square root of 255866511 is about 15995.8279248059. The cubic root of 255866511 is about 634.8500367139.

The spelling of 255866511 in words is "two hundred fifty-five million, eight hundred sixty-six thousand, five hundred eleven".