563513891 has 2 divisors, whose sum is σ = 563513892. Its totient is φ = 563513890.

The previous prime is 563513887. The next prime is 563513903. The reversal of 563513891 is 198315365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 563513891 - 2² = 563513887 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (563513831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281756945 + 281756946.

It is an arithmetic number, because the mean of its divisors is an integer number (281756946).

Almost surely, 2^563513891 is an apocalyptic number.

563513891 is a deficient number, since it is larger than the sum of its proper divisors (1).

563513891 is an equidigital number, since it uses as much as digits as its factorization.

563513891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The square root of 563513891 is about 23738.4475271657. The cubic root of 563513891 is about 825.9774840601.

The spelling of 563513891 in words is "five hundred sixty-three million, five hundred thirteen thousand, eight hundred ninety-one".