205460971 has 2 divisors, whose sum is σ = 205460972. Its totient is φ = 205460970.

The previous prime is 205460897. The next prime is 205460989. The reversal of 205460971 is 179064502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205460971 - 2⁹ = 205460459 is a prime.

It is not a weakly prime, because it can be changed into another prime (205467971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102730485 + 102730486.

It is an arithmetic number, because the mean of its divisors is an integer number (102730486).

Almost surely, 2^205460971 is an apocalyptic number.

205460971 is a deficient number, since it is larger than the sum of its proper divisors (1).

205460971 is an equidigital number, since it uses as much as digits as its factorization.

205460971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 205460971 is about 14333.9098294917. The cubic root of 205460971 is about 590.0784832873.

The spelling of 205460971 in words is "two hundred five million, four hundred sixty thousand, nine hundred seventy-one".