161097 has 4 divisors (see below), whose sum is σ = 214800. Its totient is φ = 107396.

The previous prime is 161093. The next prime is 161123. The reversal of 161097 is 790161.

161097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 790161 = 3 ⋅263387.

It is a cyclic number.

It is not a de Polignac number, because 161097 - 2² = 161093 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161097.

It is not an unprimeable number, because it can be changed into a prime (161093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26847 + ... + 26852.

It is an arithmetic number, because the mean of its divisors is an integer number (53700).

2¹⁶¹⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

161097 is a deficient number, since it is larger than the sum of its proper divisors (53703).

161097 is an equidigital number, since it uses as much as digits as its factorization.

161097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53702.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 161097 is about 401.3689076149. The cubic root of 161097 is about 54.4121413572.

The spelling of 161097 in words is "one hundred sixty-one thousand, ninety-seven".