540660243 has 32 divisors (see below), whose sum is σ = 775360512. Its totient is φ = 334454400.

The previous prime is 540660229. The next prime is 540660259. The reversal of 540660243 is 342066045.

It is not a de Polignac number, because 540660243 - 2⁴ = 540660227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 540660243.

It is not an unprimeable number, because it can be changed into a prime (540660203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243205 + ... + 245417.

It is an arithmetic number, because the mean of its divisors is an integer number (24230016).

Almost surely, 2^540660243 is an apocalyptic number.

540660243 is a deficient number, since it is larger than the sum of its proper divisors (234700269).

540660243 is a wasteful number, since it uses less digits than its factorization.

540660243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 540660243 is about 23252.1019049891. The cubic root of 540660243 is about 814.6570341103.

The spelling of 540660243 in words is "five hundred forty million, six hundred sixty thousand, two hundred forty-three".