206554223 has 2 divisors, whose sum is σ = 206554224. Its totient is φ = 206554222.

The previous prime is 206554213. The next prime is 206554247. The reversal of 206554223 is 322455602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206554223 - 2⁴ = 206554207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206554213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103277111 + 103277112.

It is an arithmetic number, because the mean of its divisors is an integer number (103277112).

Almost surely, 2^206554223 is an apocalyptic number.

206554223 is a deficient number, since it is larger than the sum of its proper divisors (1).

206554223 is an equidigital number, since it uses as much as digits as its factorization.

206554223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 206554223 is about 14371.9943988300. The cubic root of 206554223 is about 591.1232294096.

The spelling of 206554223 in words is "two hundred six million, five hundred fifty-four thousand, two hundred twenty-three".