561265612 has 18 divisors (see below), whose sum is σ = 994849548. Its totient is φ = 277068168.

The previous prime is 561265609. The next prime is 561265613. The reversal of 561265612 is 216562165.

561265612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (561265613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13723 + ... + 36205.

Almost surely, 2^561265612 is an apocalyptic number.

It is an amenable number.

561265612 is a deficient number, since it is larger than the sum of its proper divisors (433583936).

561265612 is a wasteful number, since it uses less digits than its factorization.

561265612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22645 (or 22564 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 561265612 is about 23691.0449748423. The cubic root of 561265612 is about 824.8775389703.

The spelling of 561265612 in words is "five hundred sixty-one million, two hundred sixty-five thousand, six hundred twelve".