206645053 has 2 divisors, whose sum is σ = 206645054. Its totient is φ = 206645052.

The previous prime is 206645029. The next prime is 206645059. The reversal of 206645053 is 350546602.

206645053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124144164 + 82500889 = 11142^2 + 9083^2 .

It is a cyclic number.

It is not a de Polignac number, because 206645053 - 2¹⁷ = 206513981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206645059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103322526 + 103322527.

It is an arithmetic number, because the mean of its divisors is an integer number (103322527).

Almost surely, 2^206645053 is an apocalyptic number.

It is an amenable number.

206645053 is a deficient number, since it is larger than the sum of its proper divisors (1).

206645053 is an equidigital number, since it uses as much as digits as its factorization.

206645053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 206645053 is about 14375.1540165662. The cubic root of 206645053 is about 591.2098634081.

The spelling of 206645053 in words is "two hundred six million, six hundred forty-five thousand, fifty-three".