205230569 has 2 divisors, whose sum is σ = 205230570. Its totient is φ = 205230568.

The previous prime is 205230551. The next prime is 205230577. The reversal of 205230569 is 965032502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153462544 + 51768025 = 12388^2 + 7195^2 .

It is a cyclic number.

It is not a de Polignac number, because 205230569 - 2¹² = 205226473 is a prime.

It is a super-2 number, since 2×205230569² = 84239172904127522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205230269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102615284 + 102615285.

It is an arithmetic number, because the mean of its divisors is an integer number (102615285).

Almost surely, 2^205230569 is an apocalyptic number.

It is an amenable number.

205230569 is a deficient number, since it is larger than the sum of its proper divisors (1).

205230569 is an equidigital number, since it uses as much as digits as its factorization.

205230569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 205230569 is about 14325.8706192678. The cubic root of 205230569 is about 589.8578313011.

The spelling of 205230569 in words is "two hundred five million, two hundred thirty thousand, five hundred sixty-nine".