206553223 has 2 divisors, whose sum is σ = 206553224. Its totient is φ = 206553222.

The previous prime is 206553211. The next prime is 206553229. The reversal of 206553223 is 322355602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206553223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206553191 and 206553200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206553229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103276611 + 103276612.

It is an arithmetic number, because the mean of its divisors is an integer number (103276612).

Almost surely, 2^206553223 is an apocalyptic number.

206553223 is a deficient number, since it is larger than the sum of its proper divisors (1).

206553223 is an equidigital number, since it uses as much as digits as its factorization.

206553223 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 28.

The square root of 206553223 is about 14371.9596089051. The cubic root of 206553223 is about 591.1222754645.

The spelling of 206553223 in words is "two hundred six million, five hundred fifty-three thousand, two hundred twenty-three".