12193561 has 2 divisors, whose sum is σ = 12193562. Its totient is φ = 12193560.

The previous prime is 12193549. The next prime is 12193583. The reversal of 12193561 is 16539121.

12193561 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., 6760000 + 5433561 = 2600^2 + 2331^2 .

It is a cyclic number.

It is not a de Polignac number, because 12193561 - 2⁵ = 12193529 is a prime.

It is not a weakly prime, because it can be changed into another prime (12193591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6096780 + 6096781.

It is an arithmetic number, because the mean of its divisors is an integer number (6096781).

Almost surely, 2^12193561 is an apocalyptic number.

It is an amenable number.

12193561 is a deficient number, since it is larger than the sum of its proper divisors (1).

12193561 is an equidigital number, since it uses as much as digits as its factorization.

12193561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 28.

The square root of 12193561 is about 3491.9279774932. The cubic root of 12193561 is about 230.1672444583.

The spelling of 12193561 in words is "twelve million, one hundred ninety-three thousand, five hundred sixty-one".