205056497 has 2 divisors, whose sum is σ = 205056498. Its totient is φ = 205056496.

The previous prime is 205056487. The next prime is 205056557. The reversal of 205056497 is 794650502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202094656 + 2961841 = 14216^2 + 1721^2 .

It is a cyclic number.

It is not a de Polignac number, because 205056497 - 2⁶ = 205056433 is a prime.

It is a super-2 number, since 2×205056497² = 84096333923822018, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205056497.

It is not a weakly prime, because it can be changed into another prime (205056487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102528248 + 102528249.

It is an arithmetic number, because the mean of its divisors is an integer number (102528249).

Almost surely, 2^205056497 is an apocalyptic number.

It is an amenable number.

205056497 is a deficient number, since it is larger than the sum of its proper divisors (1).

205056497 is an equidigital number, since it uses as much as digits as its factorization.

205056497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 205056497 is about 14319.7938881815. The cubic root of 205056497 is about 589.6910160353.

The spelling of 205056497 in words is "two hundred five million, fifty-six thousand, four hundred ninety-seven".