4505556161 has 2 divisors, whose sum is σ = 4505556162. Its totient is φ = 4505556160.

The previous prime is 4505556137. The next prime is 4505556191. The reversal of 4505556161 is 1616555054.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3306250000 + 1199306161 = 57500^2 + 34631^2 .

It is a cyclic number.

It is not a de Polignac number, because 4505556161 - 2²² = 4501361857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4505556191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2252778080 + 2252778081.

It is an arithmetic number, because the mean of its divisors is an integer number (2252778081).

Almost surely, 2^4505556161 is an apocalyptic number.

It is an amenable number.

4505556161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4505556161 is an equidigital number, since it uses as much as digits as its factorization.

4505556161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 38.

The square root of 4505556161 is about 67123.4397286075. The cubic root of 4505556161 is about 1651.6428279268.

The spelling of 4505556161 in words is "four billion, five hundred five million, five hundred fifty-six thousand, one hundred sixty-one".