10447561 has 2 divisors, whose sum is σ = 10447562. Its totient is φ = 10447560.

The previous prime is 10447559. The next prime is 10447597. The reversal of 10447561 is 16574401.

10447561 is digitally balanced in base 3, 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., 10017225 + 430336 = 3165^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 10447561 - 2¹ = 10447559 is a prime.

Together with 10447559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10447361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5223780 + 5223781.

It is an arithmetic number, because the mean of its divisors is an integer number (5223781).

Almost surely, 2^10447561 is an apocalyptic number.

It is an amenable number.

10447561 is a deficient number, since it is larger than the sum of its proper divisors (1).

10447561 is an equidigital number, since it uses as much as digits as its factorization.

10447561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 10447561 is about 3232.2687078892. The cubic root of 10447561 is about 218.6108125715.

The spelling of 10447561 in words is "ten million, four hundred forty-seven thousand, five hundred sixty-one".