540569 has 8 divisors (see below), whose sum is σ = 594240. Its totient is φ = 489456.

The previous prime is 540559. The next prime is 540577. The reversal of 540569 is 965045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540569 is a prime.

It is a super-2 number, since 2×540569² = 584429687522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (540509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (74280).

2⁵⁴⁰⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

540569 is a deficient number, since it is larger than the sum of its proper divisors (53671).

540569 is a wasteful number, since it uses less digits than its factorization.

540569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 540569 is about 735.2339763640. The cubic root of 540569 is about 81.4611203767.

The spelling of 540569 in words is "five hundred forty thousand, five hundred sixty-nine".