12161563 has 2 divisors, whose sum is σ = 12161564. Its totient is φ = 12161562.

The previous prime is 12161533. The next prime is 12161573. The reversal of 12161563 is 36516121.

12161563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (36516121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12161563 - 2⁵ = 12161531 is a prime.

It is a super-2 number, since 2×12161563² = 295807229205938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12161533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6080781 + 6080782.

It is an arithmetic number, because the mean of its divisors is an integer number (6080782).

Almost surely, 2^12161563 is an apocalyptic number.

12161563 is a deficient number, since it is larger than the sum of its proper divisors (1).

12161563 is an equidigital number, since it uses as much as digits as its factorization.

12161563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 12161563 is about 3487.3432581264. The cubic root of 12161563 is about 229.9657352863.

Adding to 12161563 its reverse (36516121), we get a palindrome (48677684).

The spelling of 12161563 in words is "twelve million, one hundred sixty-one thousand, five hundred sixty-three".