255858811 has 16 divisors (see below), whose sum is σ = 284441248. Its totient is φ = 228614400.

The previous prime is 255858809. The next prime is 255858839. The reversal of 255858811 is 118858552.

It is a cyclic number.

It is not a de Polignac number, because 255858811 - 2¹ = 255858809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255858311) 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, 100231 + ... + 102751.

It is an arithmetic number, because the mean of its divisors is an integer number (17777578).

Almost surely, 2^255858811 is an apocalyptic number.

255858811 is a deficient number, since it is larger than the sum of its proper divisors (28582437).

255858811 is a wasteful number, since it uses less digits than its factorization.

255858811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782.

The product of its digits is 128000, while the sum is 43.

The square root of 255858811 is about 15995.5872352346. The cubic root of 255858811 is about 634.8436682963.

The spelling of 255858811 in words is "two hundred fifty-five million, eight hundred fifty-eight thousand, eight hundred eleven".