565516213 has 2 divisors, whose sum is σ = 565516214. Its totient is φ = 565516212.

The previous prime is 565516199. The next prime is 565516223. The reversal of 565516213 is 312615565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348307569 + 217208644 = 18663^2 + 14738^2 .

It is a cyclic number.

It is not a de Polignac number, because 565516213 - 2²¹ = 563419061 is a prime.

It is a super-2 number, since 2×565516213² = 639617174331722738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565516223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282758106 + 282758107.

It is an arithmetic number, because the mean of its divisors is an integer number (282758107).

Almost surely, 2^565516213 is an apocalyptic number.

It is an amenable number.

565516213 is a deficient number, since it is larger than the sum of its proper divisors (1).

565516213 is an equidigital number, since it uses as much as digits as its factorization.

565516213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 34.

The square root of 565516213 is about 23780.5847909592. The cubic root of 565516213 is about 826.9546370528.

The spelling of 565516213 in words is "five hundred sixty-five million, five hundred sixteen thousand, two hundred thirteen".