539540 has 24 divisors (see below), whose sum is σ = 1156680. Its totient is φ = 211328.

The previous prime is 539533. The next prime is 539573. The reversal of 539540 is 45935.

It can be written as a sum of positive squares in 4 ways, for example, as 174724 + 364816 = 418^2 + 604^2 .

It is a super-2 number, since 2×539540² = 582206823200, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 539540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806 + ... + 1314.

It is an arithmetic number, because the mean of its divisors is an integer number (48195).

2⁵³⁹⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

539540 is an abundant number, since it is smaller than the sum of its proper divisors (617140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

539540 is a wasteful number, since it uses less digits than its factorization.

539540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 539540 is about 734.5338657952. The cubic root of 539540 is about 81.4093991123.

The spelling of 539540 in words is "five hundred thirty-nine thousand, five hundred forty".