109563161 has 2 divisors, whose sum is σ = 109563162. Its totient is φ = 109563160.

The previous prime is 109563151. The next prime is 109563163. The reversal of 109563161 is 161365901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109327936 + 235225 = 10456^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 109563161 - 2¹⁰ = 109562137 is a prime.

Together with 109563163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109563163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54781580 + 54781581.

It is an arithmetic number, because the mean of its divisors is an integer number (54781581).

Almost surely, 2^109563161 is an apocalyptic number.

It is an amenable number.

109563161 is a deficient number, since it is larger than the sum of its proper divisors (1).

109563161 is an equidigital number, since it uses as much as digits as its factorization.

109563161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 109563161 is about 10467.2422824735. The cubic root of 109563161 is about 478.5068778545.

The spelling of 109563161 in words is "one hundred nine million, five hundred sixty-three thousand, one hundred sixty-one".