255716291 has 2 divisors, whose sum is σ = 255716292. Its totient is φ = 255716290.

The previous prime is 255716273. The next prime is 255716311. The reversal of 255716291 is 192617552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255716291 - 2¹⁰ = 255715267 is a prime.

It is not a weakly prime, because it can be changed into another prime (255716191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127858145 + 127858146.

It is an arithmetic number, because the mean of its divisors is an integer number (127858146).

Almost surely, 2^255716291 is an apocalyptic number.

255716291 is a deficient number, since it is larger than the sum of its proper divisors (1).

255716291 is an equidigital number, since it uses as much as digits as its factorization.

255716291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 38.

The square root of 255716291 is about 15991.1316360038. The cubic root of 255716291 is about 634.7257716017.

The spelling of 255716291 in words is "two hundred fifty-five million, seven hundred sixteen thousand, two hundred ninety-one".