539725 has 6 divisors (see below), whose sum is σ = 669290. Its totient is φ = 431760.

The previous prime is 539723. The next prime is 539729. The reversal of 539725 is 527935.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 29929 + 509796 = 173^2 + 714^2 .

It is not a de Polignac number, because 539725 - 2¹ = 539723 is a prime.

It is a d-powerful number, because it can be written as 5² + 3¹² + 7² + 9⁴ + 2¹⁰ + 5⁴ .

539725 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539723) 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, 10770 + ... + 10819.

2⁵³⁹⁷²⁵ is an apocalyptic number.

It is an amenable number.

539725 is a deficient number, since it is larger than the sum of its proper divisors (129565).

539725 is a wasteful number, since it uses less digits than its factorization.

539725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21599 (or 21594 counting only the distinct ones).

The product of its digits is 9450, while the sum is 31.

The square root of 539725 is about 734.6597852067. The cubic root of 539725 is about 81.4187027276.

The spelling of 539725 in words is "five hundred thirty-nine thousand, seven hundred twenty-five".