205000597 has 2 divisors, whose sum is σ = 205000598. Its totient is φ = 205000596.

The previous prime is 205000583. The next prime is 205000657. The reversal of 205000597 is 795000502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199402641 + 5597956 = 14121^2 + 2366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205000597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205000517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102500298 + 102500299.

It is an arithmetic number, because the mean of its divisors is an integer number (102500299).

Almost surely, 2^205000597 is an apocalyptic number.

It is an amenable number.

205000597 is a deficient number, since it is larger than the sum of its proper divisors (1).

205000597 is an equidigital number, since it uses as much as digits as its factorization.

205000597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 205000597 is about 14317.8419114055. The cubic root of 205000597 is about 589.6374263757.

The spelling of 205000597 in words is "two hundred five million, five hundred ninety-seven", and thus it is an aban number.