205074161 has 2 divisors, whose sum is σ = 205074162. Its totient is φ = 205074160.

The previous prime is 205074151. The next prime is 205074173. The reversal of 205074161 is 161470502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109327936 + 95746225 = 10456^2 + 9785^2 .

It is a cyclic number.

It is not a de Polignac number, because 205074161 - 2⁶ = 205074097 is a prime.

It is equal to p_11344283 and since 205074161 and 11344283 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205074161.

It is not a weakly prime, because it can be changed into another prime (205074151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102537080 + 102537081.

It is an arithmetic number, because the mean of its divisors is an integer number (102537081).

Almost surely, 2^205074161 is an apocalyptic number.

It is an amenable number.

205074161 is a deficient number, since it is larger than the sum of its proper divisors (1).

205074161 is an equidigital number, since it uses as much as digits as its factorization.

205074161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 205074161 is about 14320.4106435535. The cubic root of 205074161 is about 589.7079479592.

The spelling of 205074161 in words is "two hundred five million, seventy-four thousand, one hundred sixty-one".