255987967 has 2 divisors, whose sum is σ = 255987968. Its totient is φ = 255987966.

The previous prime is 255987937. The next prime is 255987971. The reversal of 255987967 is 769789552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255987967 - 2⁷ = 255987839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255987937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127993983 + 127993984.

It is an arithmetic number, because the mean of its divisors is an integer number (127993984).

Almost surely, 2^255987967 is an apocalyptic number.

255987967 is a deficient number, since it is larger than the sum of its proper divisors (1).

255987967 is an equidigital number, since it uses as much as digits as its factorization.

255987967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9525600, while the sum is 58.

The square root of 255987967 is about 15999.6239643312. The cubic root of 255987967 is about 634.9504720914.

The spelling of 255987967 in words is "two hundred fifty-five million, nine hundred eighty-seven thousand, nine hundred sixty-seven".