56816285 has 4 divisors (see below), whose sum is σ = 68179548. Its totient is φ = 45453024.

The previous prime is 56816267. The next prime is 56816293. The reversal of 56816285 is 58261865.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39866596 + 16949689 = 6314^2 + 4117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56816285 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5681624 + ... + 5681633.

It is an arithmetic number, because the mean of its divisors is an integer number (17044887).

Almost surely, 2^56816285 is an apocalyptic number.

It is an amenable number.

56816285 is a deficient number, since it is larger than the sum of its proper divisors (11363263).

56816285 is a wasteful number, since it uses less digits than its factorization.

56816285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11363262.

The product of its digits is 115200, while the sum is 41.

The square root of 56816285 is about 7537.6577927099. The cubic root of 56816285 is about 384.4362018130.

The spelling of 56816285 in words is "fifty-six million, eight hundred sixteen thousand, two hundred eighty-five".