285487087 has 2 divisors, whose sum is σ = 285487088. Its totient is φ = 285487086.

The previous prime is 285487061. The next prime is 285487099. The reversal of 285487087 is 780784582.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285487087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285487087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285487487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142743543 + 142743544.

It is an arithmetic number, because the mean of its divisors is an integer number (142743544).

Almost surely, 2^285487087 is an apocalyptic number.

285487087 is a deficient number, since it is larger than the sum of its proper divisors (1).

285487087 is an equidigital number, since it uses as much as digits as its factorization.

285487087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1003520, while the sum is 49.

The square root of 285487087 is about 16896.3631293838. The cubic root of 285487087 is about 658.4591288463.

The spelling of 285487087 in words is "two hundred eighty-five million, four hundred eighty-seven thousand, eighty-seven".