161084563 has 2 divisors, whose sum is σ = 161084564. Its totient is φ = 161084562.

The previous prime is 161084519. The next prime is 161084593. The reversal of 161084563 is 365480161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161084563 is a prime.

It is not a weakly prime, because it can be changed into another prime (161084513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80542281 + 80542282.

It is an arithmetic number, because the mean of its divisors is an integer number (80542282).

Almost surely, 2^161084563 is an apocalyptic number.

161084563 is a deficient number, since it is larger than the sum of its proper divisors (1).

161084563 is an equidigital number, since it uses as much as digits as its factorization.

161084563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 161084563 is about 12691.9093520242. The cubic root of 161084563 is about 544.1074108031.

The spelling of 161084563 in words is "one hundred sixty-one million, eighty-four thousand, five hundred sixty-three".