13012541 has 4 divisors (see below), whose sum is σ = 13087932. Its totient is φ = 12937152.

The previous prime is 13012523. The next prime is 13012543. The reversal of 13012541 is 14521031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14521031 = 7 ⋅2074433.

It can be written as a sum of positive squares in 2 ways, for example, as 6100900 + 6911641 = 2470^2 + 2629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13012541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012543) 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 3 ways as a sum of consecutive naturals, for example, 37436 + ... + 37781.

It is an arithmetic number, because the mean of its divisors is an integer number (3271983).

Almost surely, 2^13012541 is an apocalyptic number.

It is an amenable number.

13012541 is a deficient number, since it is larger than the sum of its proper divisors (75391).

13012541 is an equidigital number, since it uses as much as digits as its factorization.

13012541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75390.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 13012541 is about 3607.2899800266. The cubic root of 13012541 is about 235.2090549543.

Adding to 13012541 its reverse (14521031), we get a palindrome (27533572).

The spelling of 13012541 in words is "thirteen million, twelve thousand, five hundred forty-one".