205921301 has 2 divisors, whose sum is σ = 205921302. Its totient is φ = 205921300.

The previous prime is 205921253. The next prime is 205921307. The reversal of 205921301 is 103129502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136282276 + 69639025 = 11674^2 + 8345^2 .

It is a cyclic number.

It is not a de Polignac number, because 205921301 - 2⁶ = 205921237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205921307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102960650 + 102960651.

It is an arithmetic number, because the mean of its divisors is an integer number (102960651).

Almost surely, 2^205921301 is an apocalyptic number.

It is an amenable number.

205921301 is a deficient number, since it is larger than the sum of its proper divisors (1).

205921301 is an equidigital number, since it uses as much as digits as its factorization.

205921301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 205921301 is about 14349.9582229357. The cubic root of 205921301 is about 590.5188397833.

The spelling of 205921301 in words is "two hundred five million, nine hundred twenty-one thousand, three hundred one".