56685449 has 4 divisors (see below), whose sum is σ = 57462036. Its totient is φ = 55908864.

The previous prime is 56685437. The next prime is 56685457. The reversal of 56685449 is 94458665.

56685449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43494025 + 13191424 = 6595^2 + 3632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56685449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56685049) 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 3 ways as a sum of consecutive naturals, for example, 388184 + ... + 388329.

It is an arithmetic number, because the mean of its divisors is an integer number (14365509).

Almost surely, 2^56685449 is an apocalyptic number.

It is an amenable number.

56685449 is a deficient number, since it is larger than the sum of its proper divisors (776587).

56685449 is an equidigital number, since it uses as much as digits as its factorization.

56685449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776586.

The product of its digits is 1036800, while the sum is 47.

The square root of 56685449 is about 7528.9739672813. The cubic root of 56685449 is about 384.1408830030.

The spelling of 56685449 in words is "fifty-six million, six hundred eighty-five thousand, four hundred forty-nine".