561020205 has 8 divisors (see below), whose sum is σ = 897632352. Its totient is φ = 299210768.

The previous prime is 561020197. The next prime is 561020227. The reversal of 561020205 is 502020165.

561020205 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 a cyclic number.

It is not a de Polignac number, because 561020205 - 2³ = 561020197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18700659 + ... + 18700688.

It is an arithmetic number, because the mean of its divisors is an integer number (112204044).

Almost surely, 2^561020205 is an apocalyptic number.

It is an amenable number.

561020205 is a deficient number, since it is larger than the sum of its proper divisors (336612147).

561020205 is a wasteful number, since it uses less digits than its factorization.

561020205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37401355.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 561020205 is about 23685.8650886979. The cubic root of 561020205 is about 824.7572986726.

The spelling of 561020205 in words is "five hundred sixty-one million, twenty thousand, two hundred five".