540193 has 4 divisors (see below), whose sum is σ = 545860. Its totient is φ = 534528.

The previous prime is 540187. The next prime is 540203. The reversal of 540193 is 391045.

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 165649 + 374544 = 407^2 + 612^2 .

It is a cyclic number.

It is not a de Polignac number, because 540193 - 2¹³ = 532001 is a prime.

It is an Ulam number.

It is a Duffinian number.

540193 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (540173) 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, 2688 + ... + 2881.

It is an arithmetic number, because the mean of its divisors is an integer number (136465).

2⁵⁴⁰¹⁹³ is an apocalyptic number.

It is an amenable number.

540193 is a deficient number, since it is larger than the sum of its proper divisors (5667).

540193 is an equidigital number, since it uses as much as digits as its factorization.

540193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5666.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 540193 is about 734.9782309701. The cubic root of 540193 is about 81.4422288719.

The spelling of 540193 in words is "five hundred forty thousand, one hundred ninety-three".