540205565 has 16 divisors (see below), whose sum is σ = 652651776. Its totient is φ = 429240000.

The previous prime is 540205553. The next prime is 540205573. The reversal of 540205565 is 565502045.

540205565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-540205565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718940 + ... + 719690.

It is an arithmetic number, because the mean of its divisors is an integer number (40790736).

Almost surely, 2^540205565 is an apocalyptic number.

It is an amenable number.

540205565 is a deficient number, since it is larger than the sum of its proper divisors (112446211).

540205565 is a wasteful number, since it uses less digits than its factorization.

540205565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 540205565 is about 23242.3227109512. The cubic root of 540205565 is about 814.4286032133.

The spelling of 540205565 in words is "five hundred forty million, two hundred five thousand, five hundred sixty-five".