285255599 has 2 divisors, whose sum is σ = 285255600. Its totient is φ = 285255598.

The previous prime is 285255559. The next prime is 285255601. The reversal of 285255599 is 995552582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285255599 - 2¹⁶ = 285190063 is a prime.

Together with 285255601, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285255559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142627799 + 142627800.

It is an arithmetic number, because the mean of its divisors is an integer number (142627800).

Almost surely, 2^285255599 is an apocalyptic number.

285255599 is a deficient number, since it is larger than the sum of its proper divisors (1).

285255599 is an equidigital number, since it uses as much as digits as its factorization.

285255599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620000, while the sum is 50.

The square root of 285255599 is about 16889.5115086257. The cubic root of 285255599 is about 658.2811095820.

The spelling of 285255599 in words is "two hundred eighty-five million, two hundred fifty-five thousand, five hundred ninety-nine".