13138597 has 4 divisors (see below), whose sum is σ = 13193356. Its totient is φ = 13083840.

The previous prime is 13138591. The next prime is 13138639. The reversal of 13138597 is 79583131.

It is a happy number.

13138597 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11082241 + 2056356 = 3329^2 + 1434^2 .

It is a cyclic number.

It is not a de Polignac number, because 13138597 - 2²³ = 4749989 is a prime.

It is a super-2 number, since 2×13138597² = 345245462256818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138591) 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, 27018 + ... + 27499.

It is an arithmetic number, because the mean of its divisors is an integer number (3298339).

Almost surely, 2^13138597 is an apocalyptic number.

It is an amenable number.

13138597 is a deficient number, since it is larger than the sum of its proper divisors (54759).

13138597 is an equidigital number, since it uses as much as digits as its factorization.

13138597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54758.

The product of its digits is 22680, while the sum is 37.

The square root of 13138597 is about 3624.7202650687. The cubic root of 13138597 is about 235.9661267576.

The spelling of 13138597 in words is "thirteen million, one hundred thirty-eight thousand, five hundred ninety-seven".