255804167 has 2 divisors, whose sum is σ = 255804168.
Its totient is φ = 255804166.
The previous prime is 255804139. The next prime is 255804169. The reversal of 255804167 is 761408552.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 255804167 - 210 = 255803143 is a prime.
It is a super-3 number, since 3×2558041673 (a number of 26 digits) contains 333 as substring.
Together with 255804169, it forms a pair of twin primes.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 255804167.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (255804169) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127902083 + 127902084.
It is an arithmetic number, because the mean of its divisors is an integer number (127902084).
Almost surely, 2255804167 is an apocalyptic number.
255804167 is a deficient number, since it is larger than the sum of its proper divisors (1).
255804167 is an equidigital number, since it uses as much as digits as its factorization.
255804167 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 67200, while the sum is 38.
The square root of 255804167 is about 15993.8790479358.
The cubic root of 255804167 is about 634.7984703645.
The spelling of 255804167 in words is "two hundred fifty-five million, eight hundred four thousand, one hundred sixty-seven".