255494791 has 2 divisors, whose sum is σ = 255494792. Its totient is φ = 255494790.

The previous prime is 255494783. The next prime is 255494807. The reversal of 255494791 is 197494552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255494791 - 2³ = 255494783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255495791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127747395 + 127747396.

It is an arithmetic number, because the mean of its divisors is an integer number (127747396).

Almost surely, 2^255494791 is an apocalyptic number.

255494791 is a deficient number, since it is larger than the sum of its proper divisors (1).

255494791 is an equidigital number, since it uses as much as digits as its factorization.

255494791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 46.

The square root of 255494791 is about 15984.2044218660. The cubic root of 255494791 is about 634.5424533748.

The spelling of 255494791 in words is "two hundred fifty-five million, four hundred ninety-four thousand, seven hundred ninety-one".