563611409 has 2 divisors, whose sum is σ = 563611410. Its totient is φ = 563611408.

The previous prime is 563611369. The next prime is 563611427. The reversal of 563611409 is 904116365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342435025 + 221176384 = 18505^2 + 14872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-563611409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (563611439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281805704 + 281805705.

It is an arithmetic number, because the mean of its divisors is an integer number (281805705).

Almost surely, 2^563611409 is an apocalyptic number.

It is an amenable number.

563611409 is a deficient number, since it is larger than the sum of its proper divisors (1).

563611409 is an equidigital number, since it uses as much as digits as its factorization.

563611409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 563611409 is about 23740.5014479476. The cubic root of 563611409 is about 826.0251273851.

The spelling of 563611409 in words is "five hundred sixty-three million, six hundred eleven thousand, four hundred nine".