8445161 has 2 divisors, whose sum is σ = 8445162. Its totient is φ = 8445160.

The previous prime is 8445137. The next prime is 8445251. The reversal of 8445161 is 1615448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6325225 + 2119936 = 2515^2 + 1456^2 .

It is a cyclic number.

It is not a de Polignac number, because 8445161 - 2⁶ = 8445097 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8445961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4222580 + 4222581.

It is an arithmetic number, because the mean of its divisors is an integer number (4222581).

Almost surely, 2^8445161 is an apocalyptic number.

It is an amenable number.

8445161 is a deficient number, since it is larger than the sum of its proper divisors (1).

8445161 is an equidigital number, since it uses as much as digits as its factorization.

8445161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 29.

The square root of 8445161 is about 2906.0559182507. The cubic root of 8445161 is about 203.6429178750.

The spelling of 8445161 in words is "eight million, four hundred forty-five thousand, one hundred sixty-one".