285082561 has 8 divisors (see below), whose sum is σ = 294443424. Its totient is φ = 275845920.

The previous prime is 285082559. The next prime is 285082579. The reversal of 285082561 is 165280582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 285082561 - 2¹ = 285082559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 285082561.

It is not an unprimeable number, because it can be changed into a prime (285082961) 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 in 7 ways as a sum of consecutive naturals, for example, 26380 + ... + 35581.

It is an arithmetic number, because the mean of its divisors is an integer number (36805428).

Almost surely, 2^285082561 is an apocalyptic number.

It is an amenable number.

285082561 is a deficient number, since it is larger than the sum of its proper divisors (9360863).

285082561 is a wasteful number, since it uses less digits than its factorization.

285082561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62111.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 285082561 is about 16884.3880848552. The cubic root of 285082561 is about 658.1479767154.

The spelling of 285082561 in words is "two hundred eighty-five million, eighty-two thousand, five hundred sixty-one".