248539 has 8 divisors (see below), whose sum is σ = 266240. Its totient is φ = 231336.

The previous prime is 248537. The next prime is 248543. The reversal of 248539 is 935842.

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 248539 - 2¹ = 248537 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 4 + 5⁷ + 8⁵ + 3⁸ + 9 .

It is a Duffinian number.

248539 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 248539.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248533) 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, 1894 + ... + 2020.

It is an arithmetic number, because the mean of its divisors is an integer number (33280).

248539 is a Friedman number, since it can be written as (8+4)^5-293, using all its digits and the basic arithmetic operations.

2²⁴⁸⁵³⁹ is an apocalyptic number.

248539 is a deficient number, since it is larger than the sum of its proper divisors (17701).

248539 is a wasteful number, since it uses less digits than its factorization.

248539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249.

The product of its digits is 8640, while the sum is 31.

The square root of 248539 is about 498.5368592191. The cubic root of 248539 is about 62.8730963540.

It can be divided in two parts, 248 and 539, that added together give a palindrome (787).

The spelling of 248539 in words is "two hundred forty-eight thousand, five hundred thirty-nine".