185485 has 4 divisors (see below), whose sum is σ = 222588. Its totient is φ = 148384.

The previous prime is 185483. The next prime is 185491. The reversal of 185485 is 584581.

185485 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: 584581 = 127 ⋅4603.

It can be written as a sum of positive squares in 2 ways, for example, as 51529 + 133956 = 227^2 + 366^2 .

It is a cyclic number.

It is not a de Polignac number, because 185485 - 2¹ = 185483 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

185485 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185483) 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, 18544 + ... + 18553.

It is an arithmetic number, because the mean of its divisors is an integer number (55647).

2¹⁸⁵⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

185485 is a deficient number, since it is larger than the sum of its proper divisors (37103).

185485 is an equidigital number, since it uses as much as digits as its factorization.

185485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37102.

The product of its digits is 6400, while the sum is 31.

The square root of 185485 is about 430.6796953654. The cubic root of 185485 is about 57.0299422043.

The spelling of 185485 in words is "one hundred eighty-five thousand, four hundred eighty-five".