563503813 has 2 divisors, whose sum is σ = 563503814. Its totient is φ = 563503812.

The previous prime is 563503799. The next prime is 563503819. The reversal of 563503813 is 318305365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 560837124 + 2666689 = 23682^2 + 1633^2 .

It is a cyclic number.

It is not a de Polignac number, because 563503813 - 2⁵ = 563503781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563503819) 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, 281751906 + 281751907.

It is an arithmetic number, because the mean of its divisors is an integer number (281751907).

Almost surely, 2^563503813 is an apocalyptic number.

It is an amenable number.

563503813 is a deficient number, since it is larger than the sum of its proper divisors (1).

563503813 is an equidigital number, since it uses as much as digits as its factorization.

563503813 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 34.

The square root of 563503813 is about 23738.2352545424. The cubic root of 563503813 is about 825.9725600462.

The spelling of 563503813 in words is "five hundred sixty-three million, five hundred three thousand, eight hundred thirteen".