13125539 has 4 divisors (see below), whose sum is σ = 15000624. Its totient is φ = 11250456.

The previous prime is 13125527. The next prime is 13125551. The reversal of 13125539 is 93552131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93552131 = 2027 ⋅46153.

It is an interprime number because it is at equal distance from previous prime (13125527) and next prime (13125551).

It is a de Polignac number, because none of the positive numbers 2^k-13125539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13125509) 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, 937532 + ... + 937545.

It is an arithmetic number, because the mean of its divisors is an integer number (3750156).

Almost surely, 2^13125539 is an apocalyptic number.

13125539 is a deficient number, since it is larger than the sum of its proper divisors (1875085).

13125539 is an equidigital number, since it uses as much as digits as its factorization.

13125539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875084.

The product of its digits is 4050, while the sum is 29.

The square root of 13125539 is about 3622.9185748509. The cubic root of 13125539 is about 235.8879279711.

The spelling of 13125539 in words is "thirteen million, one hundred twenty-five thousand, five hundred thirty-nine".