512539 has 4 divisors (see below), whose sum is σ = 514024. Its totient is φ = 511056.

The previous prime is 512537. The next prime is 512543. The reversal of 512539 is 935215.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 935215 = 5 ⋅187043.

It is a cyclic number.

It is not a de Polignac number, because 512539 - 2¹ = 512537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512531) 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 3 ways as a sum of consecutive naturals, for example, 79 + ... + 1015.

It is an arithmetic number, because the mean of its divisors is an integer number (128506).

2⁵¹²⁵³⁹ is an apocalyptic number.

512539 is a deficient number, since it is larger than the sum of its proper divisors (1485).

512539 is an equidigital number, since it uses as much as digits as its factorization.

512539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484.

The product of its digits is 1350, while the sum is 25.

The square root of 512539 is about 715.9182914272. The cubic root of 512539 is about 80.0280630713.

It can be divided in two parts, 5 and 12539, that added together give a square (12544 = 112²).

The spelling of 512539 in words is "five hundred twelve thousand, five hundred thirty-nine".