540185 has 4 divisors (see below), whose sum is σ = 648228. Its totient is φ = 432144.

The previous prime is 540181. The next prime is 540187. The reversal of 540185 is 581045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126736 + 413449 = 356^2 + 643^2 .

It is a cyclic number.

It is not a de Polignac number, because 540185 - 2² = 540181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 540185.

It is not an unprimeable number, because it can be changed into a prime (540181) 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, 54014 + ... + 54023.

It is an arithmetic number, because the mean of its divisors is an integer number (162057).

2⁵⁴⁰¹⁸⁵ is an apocalyptic number.

It is an amenable number.

540185 is a deficient number, since it is larger than the sum of its proper divisors (108043).

540185 is a wasteful number, since it uses less digits than its factorization.

540185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108042.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 540185 is about 734.9727886119. The cubic root of 540185 is about 81.4418268298.

The spelling of 540185 in words is "five hundred forty thousand, one hundred eighty-five".