255394911 has 4 divisors (see below), whose sum is σ = 340526552. Its totient is φ = 170263272.

The previous prime is 255394891. The next prime is 255394943. The reversal of 255394911 is 119493552.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 255394911 - 2²³ = 247006303 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 255394911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255394981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42565816 + ... + 42565821.

It is an arithmetic number, because the mean of its divisors is an integer number (85131638).

Almost surely, 2^255394911 is an apocalyptic number.

255394911 is a deficient number, since it is larger than the sum of its proper divisors (85131641).

255394911 is an equidigital number, since it uses as much as digits as its factorization.

255394911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85131640.

The product of its digits is 48600, while the sum is 39.

The square root of 255394911 is about 15981.0797820423. The cubic root of 255394911 is about 634.4597558495.

The spelling of 255394911 in words is "two hundred fifty-five million, three hundred ninety-four thousand, nine hundred eleven".