161104 has 10 divisors (see below), whose sum is σ = 312170. Its totient is φ = 80544.

The previous prime is 161093. The next prime is 161123. The reversal of 161104 is 401161.

It can be written as a sum of positive squares in only one way, i.e., 121104 + 40000 = 348^2 + 200^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5019 + ... + 5050.

It is an arithmetic number, because the mean of its divisors is an integer number (31217).

2¹⁶¹¹⁰⁴ is an apocalyptic number.

It is an amenable number.

161104 is a deficient number, since it is larger than the sum of its proper divisors (151066).

161104 is a wasteful number, since it uses less digits than its factorization.

161104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10077 (or 10071 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 161104 is about 401.3776276775. The cubic root of 161104 is about 54.4129294527.

Adding to 161104 its reverse (401161), we get a palindrome (562265).

The spelling of 161104 in words is "one hundred sixty-one thousand, one hundred four".