205536497 has 2 divisors, whose sum is σ = 205536498. Its totient is φ = 205536496.

The previous prime is 205536481. The next prime is 205536587. The reversal of 205536497 is 794635502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197149681 + 8386816 = 14041^2 + 2896^2 .

It is a cyclic number.

It is not a de Polignac number, because 205536497 - 2⁴ = 205536481 is a prime.

It is not a weakly prime, because it can be changed into another prime (205532497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102768248 + 102768249.

It is an arithmetic number, because the mean of its divisors is an integer number (102768249).

Almost surely, 2^205536497 is an apocalyptic number.

It is an amenable number.

205536497 is a deficient number, since it is larger than the sum of its proper divisors (1).

205536497 is an equidigital number, since it uses as much as digits as its factorization.

205536497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 205536497 is about 14336.5441093731. The cubic root of 205536497 is about 590.1507773224.

The spelling of 205536497 in words is "two hundred five million, five hundred thirty-six thousand, four hundred ninety-seven".