205029871 has 2 divisors, whose sum is σ = 205029872. Its totient is φ = 205029870.

The previous prime is 205029863. The next prime is 205029901. The reversal of 205029871 is 178920502.

205029871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205029871 - 2³ = 205029863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205059871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102514935 + 102514936.

It is an arithmetic number, because the mean of its divisors is an integer number (102514936).

Almost surely, 2^205029871 is an apocalyptic number.

205029871 is a deficient number, since it is larger than the sum of its proper divisors (1).

205029871 is an equidigital number, since it uses as much as digits as its factorization.

205029871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 205029871 is about 14318.8641658478. The cubic root of 205029871 is about 589.6654916996.

The spelling of 205029871 in words is "two hundred five million, twenty-nine thousand, eight hundred seventy-one".