56305643 has 2 divisors, whose sum is σ = 56305644. Its totient is φ = 56305642.

The previous prime is 56305637. The next prime is 56305651. The reversal of 56305643 is 34650365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56305643 - 2⁸ = 56305387 is a prime.

It is equal to p_3355529 and since 56305643 and 3355529 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (56305603) 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, 28152821 + 28152822.

It is an arithmetic number, because the mean of its divisors is an integer number (28152822).

Almost surely, 2^56305643 is an apocalyptic number.

56305643 is a deficient number, since it is larger than the sum of its proper divisors (1).

56305643 is an equidigital number, since it uses as much as digits as its factorization.

56305643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 56305643 is about 7503.7086164110. The cubic root of 56305643 is about 383.2810145778.

The spelling of 56305643 in words is "fifty-six million, three hundred five thousand, six hundred forty-three".