56830321 has 2 divisors, whose sum is σ = 56830322. Its totient is φ = 56830320.

The previous prime is 56830307. The next prime is 56830339. The reversal of 56830321 is 12303865.

56830321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28740321 + 28090000 = 5361^2 + 5300^2 .

It is a cyclic number.

It is not a de Polignac number, because 56830321 - 2⁹ = 56829809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56830321.

It is not a weakly prime, because it can be changed into another prime (56830421) 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 as a sum of consecutive naturals, namely, 28415160 + 28415161.

It is an arithmetic number, because the mean of its divisors is an integer number (28415161).

Almost surely, 2^56830321 is an apocalyptic number.

It is an amenable number.

56830321 is a deficient number, since it is larger than the sum of its proper divisors (1).

56830321 is an equidigital number, since it uses as much as digits as its factorization.

56830321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 56830321 is about 7538.5887936669. The cubic root of 56830321 is about 384.4678564830.

The spelling of 56830321 in words is "fifty-six million, eight hundred thirty thousand, three hundred twenty-one".