285251867 has 2 divisors, whose sum is σ = 285251868. Its totient is φ = 285251866.

The previous prime is 285251861. The next prime is 285251893. The reversal of 285251867 is 768152582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285251867 - 2¹⁰ = 285250843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (285251861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142625933 + 142625934.

It is an arithmetic number, because the mean of its divisors is an integer number (142625934).

Almost surely, 2^285251867 is an apocalyptic number.

285251867 is a deficient number, since it is larger than the sum of its proper divisors (1).

285251867 is an equidigital number, since it uses as much as digits as its factorization.

285251867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 44.

The square root of 285251867 is about 16889.4010254952. The cubic root of 285251867 is about 658.2782388048.

The spelling of 285251867 in words is "two hundred eighty-five million, two hundred fifty-one thousand, eight hundred sixty-seven".