206545133 has 2 divisors, whose sum is σ = 206545134. Its totient is φ = 206545132.

The previous prime is 206545123. The next prime is 206545151. The reversal of 206545133 is 331545602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203975524 + 2569609 = 14282^2 + 1603^2 .

It is a cyclic number.

It is not a de Polignac number, because 206545133 - 2⁴ = 206545117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206545096 and 206545105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206545123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103272566 + 103272567.

It is an arithmetic number, because the mean of its divisors is an integer number (103272567).

Almost surely, 2^206545133 is an apocalyptic number.

It is an amenable number.

206545133 is a deficient number, since it is larger than the sum of its proper divisors (1).

206545133 is an equidigital number, since it uses as much as digits as its factorization.

206545133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 206545133 is about 14371.6781553164. The cubic root of 206545133 is about 591.1145579352.

The spelling of 206545133 in words is "two hundred six million, five hundred forty-five thousand, one hundred thirty-three".