205926271 has 2 divisors, whose sum is σ = 205926272. Its totient is φ = 205926270.

The previous prime is 205926251. The next prime is 205926293. The reversal of 205926271 is 172629502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205926271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205926241) 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, 102963135 + 102963136.

It is an arithmetic number, because the mean of its divisors is an integer number (102963136).

Almost surely, 2^205926271 is an apocalyptic number.

205926271 is a deficient number, since it is larger than the sum of its proper divisors (1).

205926271 is an equidigital number, since it uses as much as digits as its factorization.

205926271 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 205926271 is about 14350.1313931267. The cubic root of 205926271 is about 590.5235905546.

The spelling of 205926271 in words is "two hundred five million, nine hundred twenty-six thousand, two hundred seventy-one".