205434497 has 2 divisors, whose sum is σ = 205434498. Its totient is φ = 205434496.

The previous prime is 205434473. The next prime is 205434527. The reversal of 205434497 is 794434502.

205434497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153536881 + 51897616 = 12391^2 + 7204^2 .

It is a cyclic number.

It is not a de Polignac number, because 205434497 - 2⁶ = 205434433 is a prime.

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 205434497.

It is not a weakly prime, because it can be changed into another prime (205439497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102717248 + 102717249.

It is an arithmetic number, because the mean of its divisors is an integer number (102717249).

Almost surely, 2^205434497 is an apocalyptic number.

It is an amenable number.

205434497 is a deficient number, since it is larger than the sum of its proper divisors (1).

205434497 is an equidigital number, since it uses as much as digits as its factorization.

205434497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 205434497 is about 14332.9863252569. The cubic root of 205434497 is about 590.0531379891.

Adding to 205434497 its reverse (794434502), we get a palindrome (999868999).

The spelling of 205434497 in words is "two hundred five million, four hundred thirty-four thousand, four hundred ninety-seven".