206510201 has 8 divisors (see below), whose sum is σ = 209105160. Its totient is φ = 203928192.

The previous prime is 206510191. The next prime is 206510219. The reversal of 206510201 is 102015602.

206510201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2706025 + 203804176 = 1645^2 + 14276^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206510201 - 2⁶ = 206510137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206510201.

It is not an unprimeable number, because it can be changed into a prime (206510231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31091 + ... + 37143.

It is an arithmetic number, because the mean of its divisors is an integer number (26138145).

Almost surely, 2^206510201 is an apocalyptic number.

It is an amenable number.

206510201 is a deficient number, since it is larger than the sum of its proper divisors (2594959).

206510201 is a wasteful number, since it uses less digits than its factorization.

206510201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 206510201 is about 14370.4627970014. The cubic root of 206510201 is about 591.0812319213.

Adding to 206510201 its reverse (102015602), we get a palindrome (308525803).

The spelling of 206510201 in words is "two hundred six million, five hundred ten thousand, two hundred one".