563251643 has 2 divisors, whose sum is σ = 563251644. Its totient is φ = 563251642.

The previous prime is 563251639. The next prime is 563251657. The reversal of 563251643 is 346152365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 563251643 - 2² = 563251639 is a prime.

It is not a weakly prime, because it can be changed into another prime (563251693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281625821 + 281625822.

It is an arithmetic number, because the mean of its divisors is an integer number (281625822).

Almost surely, 2^563251643 is an apocalyptic number.

563251643 is a deficient number, since it is larger than the sum of its proper divisors (1).

563251643 is an equidigital number, since it uses as much as digits as its factorization.

563251643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 35.

The square root of 563251643 is about 23732.9231869991. The cubic root of 563251643 is about 825.8493330908.

It can be divided in two parts, 5632 and 51643, that added together give a palindrome (57275).

The spelling of 563251643 in words is "five hundred sixty-three million, two hundred fifty-one thousand, six hundred forty-three".