563429621 has 2 divisors, whose sum is σ = 563429622. Its totient is φ = 563429620.

The previous prime is 563429617. The next prime is 563429677. The reversal of 563429621 is 126924365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308388721 + 255040900 = 17561^2 + 15970^2 .

It is a cyclic number.

It is not a de Polignac number, because 563429621 - 2² = 563429617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563429221) 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, 281714810 + 281714811.

It is an arithmetic number, because the mean of its divisors is an integer number (281714811).

Almost surely, 2^563429621 is an apocalyptic number.

It is an amenable number.

563429621 is a deficient number, since it is larger than the sum of its proper divisors (1).

563429621 is an equidigital number, since it uses as much as digits as its factorization.

563429621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 563429621 is about 23736.6724921586. The cubic root of 563429621 is about 825.9363087412.

The spelling of 563429621 in words is "five hundred sixty-three million, four hundred twenty-nine thousand, six hundred twenty-one".