255320287 has 2 divisors, whose sum is σ = 255320288. Its totient is φ = 255320286.

The previous prime is 255320257. The next prime is 255320357. The reversal of 255320287 is 782023552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255320287 - 2⁷ = 255320159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255320207) 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, 127660143 + 127660144.

It is an arithmetic number, because the mean of its divisors is an integer number (127660144).

Almost surely, 2^255320287 is an apocalyptic number.

255320287 is a deficient number, since it is larger than the sum of its proper divisors (1).

255320287 is an equidigital number, since it uses as much as digits as its factorization.

255320287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 255320287 is about 15978.7448505820. The cubic root of 255320287 is about 634.3979554313.

The spelling of 255320287 in words is "two hundred fifty-five million, three hundred twenty thousand, two hundred eighty-seven".