205230561 has 8 divisors (see below), whose sum is σ = 274089600. Its totient is φ = 136595952.

The previous prime is 205230551. The next prime is 205230569. The reversal of 205230561 is 165032502.

205230561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205230561 - 2⁹ = 205230049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205230569) 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, 53961 + ... + 57638.

It is an arithmetic number, because the mean of its divisors is an integer number (34261200).

Almost surely, 2^205230561 is an apocalyptic number.

It is an amenable number.

205230561 is a deficient number, since it is larger than the sum of its proper divisors (68859039).

205230561 is a wasteful number, since it uses less digits than its factorization.

205230561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112215.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 205230561 is about 14325.8703400526. The cubic root of 205230561 is about 589.8578236368.

The spelling of 205230561 in words is "two hundred five million, two hundred thirty thousand, five hundred sixty-one".