161086573 has 4 divisors (see below), whose sum is σ = 161269888. Its totient is φ = 160903260.

The previous prime is 161086547. The next prime is 161086589. The reversal of 161086573 is 375680161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161086573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161086073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90333 + ... + 92098.

It is an arithmetic number, because the mean of its divisors is an integer number (40317472).

Almost surely, 2^161086573 is an apocalyptic number.

It is an amenable number.

161086573 is a deficient number, since it is larger than the sum of its proper divisors (183315).

161086573 is an equidigital number, since it uses as much as digits as its factorization.

161086573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183314.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 161086573 is about 12691.9885360805. The cubic root of 161086573 is about 544.1096739029.

The spelling of 161086573 in words is "one hundred sixty-one million, eighty-six thousand, five hundred seventy-three".