205545223 has 8 divisors (see below), whose sum is σ = 222518016. Its totient is φ = 188738400.

The previous prime is 205545199. The next prime is 205545239. The reversal of 205545223 is 322545502.

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 205545223 - 2⁵ = 205545191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205545191 and 205545200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205545253) 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, 38908 + ... + 43873.

It is an arithmetic number, because the mean of its divisors is an integer number (27814752).

Almost surely, 2^205545223 is an apocalyptic number.

205545223 is a deficient number, since it is larger than the sum of its proper divisors (16972793).

205545223 is a wasteful number, since it uses less digits than its factorization.

205545223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82985.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 205545223 is about 14336.8484333203. The cubic root of 205545223 is about 590.1591287715.

It can be divided in two parts, 2055 and 45223, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 205545223 in words is "two hundred five million, five hundred forty-five thousand, two hundred twenty-three".