13381597 has 2 divisors, whose sum is σ = 13381598. Its totient is φ = 13381596.

The previous prime is 13381549. The next prime is 13381633. The reversal of 13381597 is 79518331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10374841 + 3006756 = 3221^2 + 1734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13381597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13381507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6690798 + 6690799.

It is an arithmetic number, because the mean of its divisors is an integer number (6690799).

Almost surely, 2^13381597 is an apocalyptic number.

It is an amenable number.

13381597 is a deficient number, since it is larger than the sum of its proper divisors (1).

13381597 is an equidigital number, since it uses as much as digits as its factorization.

13381597 is an odious number, because the sum of its binary digits is odd.

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

The square root of 13381597 is about 3658.0865216668. The cubic root of 13381597 is about 237.4119902899.

The spelling of 13381597 in words is "thirteen million, three hundred eighty-one thousand, five hundred ninety-seven".