539081 has 6 divisors (see below), whose sum is σ = 559182. Its totient is φ = 519680.

The previous prime is 539047. The next prime is 539089. The reversal of 539081 is 180935.

It can be written as a sum of positive squares in 3 ways, for example, as 198025 + 341056 = 445^2 + 584^2 .

It is a de Polignac number, because none of the positive numbers 2^k-539081 is a prime.

It is a super-2 number, since 2×539081² = 581216649122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 539081.

It is not an unprimeable number, because it can be changed into a prime (539089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 521 + ... + 1161.

It is an arithmetic number, because the mean of its divisors is an integer number (93197).

2⁵³⁹⁰⁸¹ is an apocalyptic number.

It is an amenable number.

539081 is a deficient number, since it is larger than the sum of its proper divisors (20101).

539081 is an equidigital number, since it uses as much as digits as its factorization.

539081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 539081 is about 734.2213562680. The cubic root of 539081 is about 81.3863069007.

The spelling of 539081 in words is "five hundred thirty-nine thousand, eighty-one".