56602321 has 2 divisors, whose sum is σ = 56602322. Its totient is φ = 56602320.

The previous prime is 56602307. The next prime is 56602363. The reversal of 56602321 is 12320665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55726225 + 876096 = 7465^2 + 936^2 .

It is a cyclic number.

It is not a de Polignac number, because 56602321 - 2⁵ = 56602289 is a prime.

It is not a weakly prime, because it can be changed into another prime (56602391) 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 as a sum of consecutive naturals, namely, 28301160 + 28301161.

It is an arithmetic number, because the mean of its divisors is an integer number (28301161).

Almost surely, 2^56602321 is an apocalyptic number.

It is an amenable number.

56602321 is a deficient number, since it is larger than the sum of its proper divisors (1).

56602321 is an equidigital number, since it uses as much as digits as its factorization.

56602321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 56602321 is about 7523.4514021159. The cubic root of 56602321 is about 383.9530130044.

Adding to 56602321 its reverse (12320665), we get a palindrome (68922986).

The spelling of 56602321 in words is "fifty-six million, six hundred two thousand, three hundred twenty-one".