206550011 has 2 divisors, whose sum is σ = 206550012. Its totient is φ = 206550010.

The previous prime is 206549999. The next prime is 206550037. The reversal of 206550011 is 110055602.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206550011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206550041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103275005 + 103275006.

It is an arithmetic number, because the mean of its divisors is an integer number (103275006).

Almost surely, 2^206550011 is an apocalyptic number.

206550011 is a deficient number, since it is larger than the sum of its proper divisors (1).

206550011 is an equidigital number, since it uses as much as digits as its factorization.

206550011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 206550011 is about 14371.8478630968. The cubic root of 206550011 is about 591.1192113719.

The spelling of 206550011 in words is "two hundred six million, five hundred fifty thousand, eleven".