285056651 has 4 divisors (see below), whose sum is σ = 310970904. Its totient is φ = 259142400.

The previous prime is 285056633. The next prime is 285056669. The reversal of 285056651 is 156650582.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (285056633) and next prime (285056669).

It is a de Polignac number, because none of the positive numbers 2^k-285056651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285056351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12957110 + ... + 12957131.

It is an arithmetic number, because the mean of its divisors is an integer number (77742726).

Almost surely, 2^285056651 is an apocalyptic number.

285056651 is a deficient number, since it is larger than the sum of its proper divisors (25914253).

285056651 is a wasteful number, since it uses less digits than its factorization.

285056651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25914252.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 285056651 is about 16883.6207905769. The cubic root of 285056651 is about 658.1280373095.

The spelling of 285056651 in words is "two hundred eighty-five million, fifty-six thousand, six hundred fifty-one".