2013539 has 8 divisors (see below), whose sum is σ = 2212032. Its totient is φ = 1817640.

The previous prime is 2013533. The next prime is 2013541. The reversal of 2013539 is 9353102.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2013539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1232 + ... + 2354.

It is an arithmetic number, because the mean of its divisors is an integer number (276504).

2^2013539 is an apocalyptic number.

2013539 is a deficient number, since it is larger than the sum of its proper divisors (198493).

2013539 is a wasteful number, since it uses less digits than its factorization.

2013539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 2013539 is about 1418.9922480408. The cubic root of 2013539 is about 126.2757670506.

It can be divided in two parts, 2013 and 539, that added together give a palindrome (2552).

The spelling of 2013539 in words is "two million, thirteen thousand, five hundred thirty-nine".