184561 has 4 divisors (see below), whose sum is σ = 198772. Its totient is φ = 170352.

The previous prime is 184559. The next prime is 184567. The reversal of 184561 is 165481.

184561 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 an emirpimes, since its reverse is a distinct semiprime: 165481 = 127 ⋅1303.

It can be written as a sum of positive squares in 2 ways, for example, as 119025 + 65536 = 345^2 + 256^2 .

It is not a de Polignac number, because 184561 - 2¹ = 184559 is a prime.

It is a Duffinian number.

184561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (184567) 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, 7086 + ... + 7111.

It is an arithmetic number, because the mean of its divisors is an integer number (49693).

2¹⁸⁴⁵⁶¹ is an apocalyptic number.

It is an amenable number.

184561 is a deficient number, since it is larger than the sum of its proper divisors (14211).

184561 is a wasteful number, since it uses less digits than its factorization.

184561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14210.

The product of its digits is 960, while the sum is 25.

The square root of 184561 is about 429.6056331102. The cubic root of 184561 is about 56.9350856367.

The spelling of 184561 in words is "one hundred eighty-four thousand, five hundred sixty-one".