206071051 has 2 divisors, whose sum is σ = 206071052. Its totient is φ = 206071050.

The previous prime is 206071031. The next prime is 206071057. The reversal of 206071051 is 150170602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206071051 is a prime.

It is not a weakly prime, because it can be changed into another prime (206071057) 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, 103035525 + 103035526.

It is an arithmetic number, because the mean of its divisors is an integer number (103035526).

Almost surely, 2^206071051 is an apocalyptic number.

206071051 is a deficient number, since it is larger than the sum of its proper divisors (1).

206071051 is an equidigital number, since it uses as much as digits as its factorization.

206071051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 206071051 is about 14355.1750598869. The cubic root of 206071051 is about 590.6619507168.

The spelling of 206071051 in words is "two hundred six million, seventy-one thousand, fifty-one".