56305603 has 2 divisors, whose sum is σ = 56305604. Its totient is φ = 56305602.

The previous prime is 56305597. The next prime is 56305621. The reversal of 56305603 is 30650365.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56305603 is a prime.

It is equal to p_3355525 and since 56305603 and 3355525 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 13.

It is not a weakly prime, because it can be changed into another prime (56305643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28152801 + 28152802.

It is an arithmetic number, because the mean of its divisors is an integer number (28152802).

Almost surely, 2^56305603 is an apocalyptic number.

56305603 is a deficient number, since it is larger than the sum of its proper divisors (1).

56305603 is an equidigital number, since it uses as much as digits as its factorization.

56305603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 56305603 is about 7503.7059510618. The cubic root of 56305603 is about 383.2809238158.

Adding to 56305603 its reverse (30650365), we get a palindrome (86955968).

The spelling of 56305603 in words is "fifty-six million, three hundred five thousand, six hundred three".