563866549 has 2 divisors, whose sum is σ = 563866550. Its totient is φ = 563866548.

The previous prime is 563866543. The next prime is 563866561. The reversal of 563866549 is 945668365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 558376900 + 5489649 = 23630^2 + 2343^2 .

It is a cyclic number.

It is not a de Polignac number, because 563866549 - 2¹⁷ = 563735477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 563866496 and 563866505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563866543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281933274 + 281933275.

It is an arithmetic number, because the mean of its divisors is an integer number (281933275).

Almost surely, 2^563866549 is an apocalyptic number.

It is an amenable number.

563866549 is a deficient number, since it is larger than the sum of its proper divisors (1).

563866549 is an equidigital number, since it uses as much as digits as its factorization.

563866549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 52.

The square root of 563866549 is about 23745.8743574542. The cubic root of 563866549 is about 826.1497524098.

The spelling of 563866549 in words is "five hundred sixty-three million, eight hundred sixty-six thousand, five hundred forty-nine".