56566603 has 2 divisors, whose sum is σ = 56566604. Its totient is φ = 56566602.

The previous prime is 56566597. The next prime is 56566613. The reversal of 56566603 is 30666565.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56566603 - 2⁵ = 56566571 is a prime.

It is not a weakly prime, because it can be changed into another prime (56566613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28283301 + 28283302.

It is an arithmetic number, because the mean of its divisors is an integer number (28283302).

Almost surely, 2^56566603 is an apocalyptic number.

56566603 is a deficient number, since it is larger than the sum of its proper divisors (1).

56566603 is an equidigital number, since it uses as much as digits as its factorization.

56566603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 56566603 is about 7521.0772499689. The cubic root of 56566603 is about 383.8722335172.

The spelling of 56566603 in words is "fifty-six million, five hundred sixty-six thousand, six hundred three".