80539 has 4 divisors (see below), whose sum is σ = 82456. Its totient is φ = 78624.

The previous prime is 80537. The next prime is 80557. The reversal of 80539 is 93508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80539 - 2¹ = 80537 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894 + ... + 979.

It is an arithmetic number, because the mean of its divisors is an integer number (20614).

2⁸⁰⁵³⁹ is an apocalyptic number.

80539 is a deficient number, since it is larger than the sum of its proper divisors (1917).

80539 is a wasteful number, since it uses less digits than its factorization.

80539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 80539 is about 283.7939393292. The cubic root of 80539 is about 43.1852473060.

The spelling of 80539 in words is "eighty thousand, five hundred thirty-nine".