13140537 has 4 divisors (see below), whose sum is σ = 17520720. Its totient is φ = 8760356.

The previous prime is 13140529. The next prime is 13140551. The reversal of 13140537 is 73504131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13140537 - 2³ = 13140529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13140527) 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, 2190087 + ... + 2190092.

It is an arithmetic number, because the mean of its divisors is an integer number (4380180).

Almost surely, 2^13140537 is an apocalyptic number.

It is an amenable number.

13140537 is a deficient number, since it is larger than the sum of its proper divisors (4380183).

13140537 is an equidigital number, since it uses as much as digits as its factorization.

13140537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380182.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 13140537 is about 3624.9878620486. The cubic root of 13140537 is about 235.9777401680.

Adding to 13140537 its reverse (73504131), we get a palindrome (86644668).

The spelling of 13140537 in words is "thirteen million, one hundred forty thousand, five hundred thirty-seven".