255876191 has 4 divisors (see below), whose sum is σ = 255937752. Its totient is φ = 255814632.

The previous prime is 255876161. The next prime is 255876199. The reversal of 255876191 is 191678552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255876191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255876199) 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, 24056 + ... + 33021.

It is an arithmetic number, because the mean of its divisors is an integer number (63984438).

Almost surely, 2^255876191 is an apocalyptic number.

255876191 is a deficient number, since it is larger than the sum of its proper divisors (61561).

255876191 is an equidigital number, since it uses as much as digits as its factorization.

255876191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61560.

The product of its digits is 151200, while the sum is 44.

The square root of 255876191 is about 15996.1305008430. The cubic root of 255876191 is about 634.8580425432.

The spelling of 255876191 in words is "two hundred fifty-five million, eight hundred seventy-six thousand, one hundred ninety-one".