10195561 has 2 divisors, whose sum is σ = 10195562. Its totient is φ = 10195560.

The previous prime is 10195553. The next prime is 10195567. The reversal of 10195561 is 16559101.

10195561 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9960336 + 235225 = 3156^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 10195561 - 2³ = 10195553 is a prime.

It is not a weakly prime, because it can be changed into another prime (10195567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5097780 + 5097781.

It is an arithmetic number, because the mean of its divisors is an integer number (5097781).

Almost surely, 2^10195561 is an apocalyptic number.

It is an amenable number.

10195561 is a deficient number, since it is larger than the sum of its proper divisors (1).

10195561 is an equidigital number, since it uses as much as digits as its factorization.

10195561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 10195561 is about 3193.0488565006. The cubic root of 10195561 is about 216.8388235937.

The spelling of 10195561 in words is "ten million, one hundred ninety-five thousand, five hundred sixty-one".