161594 has 8 divisors (see below), whose sum is σ = 248160. Its totient is φ = 78876.

The previous prime is 161591. The next prime is 161599. The reversal of 161594 is 495161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161594² = 52225241672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161591) 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 in 3 ways as a sum of consecutive naturals, for example, 854 + ... + 1025.

It is an arithmetic number, because the mean of its divisors is an integer number (31020).

2¹⁶¹⁵⁹⁴ is an apocalyptic number.

161594 is a deficient number, since it is larger than the sum of its proper divisors (86566).

161594 is a wasteful number, since it uses less digits than its factorization.

161594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924.

The product of its digits is 1080, while the sum is 26.

The square root of 161594 is about 401.9875619966. The cubic root of 161594 is about 54.4680395053.

The spelling of 161594 in words is "one hundred sixty-one thousand, five hundred ninety-four".