255744791 has 4 divisors (see below), whose sum is σ = 255783672. Its totient is φ = 255705912.

The previous prime is 255744773. The next prime is 255744799. The reversal of 255744791 is 197447552.

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

It is a cyclic number.

It is not a de Polignac number, because 255744791 - 2²² = 251550487 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 (255744799) 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, 6860 + ... + 23633.

It is an arithmetic number, because the mean of its divisors is an integer number (63945918).

Almost surely, 2^255744791 is an apocalyptic number.

255744791 is a deficient number, since it is larger than the sum of its proper divisors (38881).

255744791 is an equidigital number, since it uses as much as digits as its factorization.

255744791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38880.

The product of its digits is 352800, while the sum is 44.

The square root of 255744791 is about 15992.0227300989. The cubic root of 255744791 is about 634.7493511351.

The spelling of 255744791 in words is "two hundred fifty-five million, seven hundred forty-four thousand, seven hundred ninety-one".