539861 has 8 divisors (see below), whose sum is σ = 621504. Its totient is φ = 459360.

The previous prime is 539849. The next prime is 539863. The reversal of 539861 is 168935.

539861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 539861 - 2⁶ = 539797 is a prime.

It is a Duffinian 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 539861.

It is not an unprimeable number, because it can be changed into a prime (539863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466 + ... + 1796.

It is an arithmetic number, because the mean of its divisors is an integer number (77688).

2⁵³⁹⁸⁶¹ is an apocalyptic number.

It is an amenable number.

539861 is a deficient number, since it is larger than the sum of its proper divisors (81643).

539861 is a wasteful number, since it uses less digits than its factorization.

539861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571.

The product of its digits is 6480, while the sum is 32.

The square root of 539861 is about 734.7523392273. The cubic root of 539861 is about 81.4255407862.

The spelling of 539861 in words is "five hundred thirty-nine thousand, eight hundred sixty-one".