206544113 has 2 divisors, whose sum is σ = 206544114. Its totient is φ = 206544112.

The previous prime is 206544053. The next prime is 206544187. The reversal of 206544113 is 311445602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200279104 + 6265009 = 14152^2 + 2503^2 .

It is a cyclic number.

It is not a de Polignac number, because 206544113 - 2¹⁰ = 206543089 is a prime.

It is a super-2 number, since 2×206544113² = 85320941229913538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206541113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103272056 + 103272057.

It is an arithmetic number, because the mean of its divisors is an integer number (103272057).

Almost surely, 2^206544113 is an apocalyptic number.

It is an amenable number.

206544113 is a deficient number, since it is larger than the sum of its proper divisors (1).

206544113 is an equidigital number, since it uses as much as digits as its factorization.

206544113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 206544113 is about 14371.6426688114. The cubic root of 206544113 is about 591.1135848826.

Adding to 206544113 its reverse (311445602), we get a palindrome (517989715).

The spelling of 206544113 in words is "two hundred six million, five hundred forty-four thousand, one hundred thirteen".