561268601 has 2 divisors, whose sum is σ = 561268602. Its totient is φ = 561268600.

The previous prime is 561268597. The next prime is 561268613. The reversal of 561268601 is 106862165.

It is a happy number.

561268601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 541027600 + 20241001 = 23260^2 + 4499^2 .

It is a cyclic number.

It is not a de Polignac number, because 561268601 - 2² = 561268597 is a prime.

It is not a weakly prime, because it can be changed into another prime (561268901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280634300 + 280634301.

It is an arithmetic number, because the mean of its divisors is an integer number (280634301).

Almost surely, 2^561268601 is an apocalyptic number.

It is an amenable number.

561268601 is a deficient number, since it is larger than the sum of its proper divisors (1).

561268601 is an equidigital number, since it uses as much as digits as its factorization.

561268601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 561268601 is about 23691.1080576659. The cubic root of 561268601 is about 824.8790032530.

The spelling of 561268601 in words is "five hundred sixty-one million, two hundred sixty-eight thousand, six hundred one".