13057397 has 4 divisors (see below), whose sum is σ = 13241376. Its totient is φ = 12873420.

The previous prime is 13057379. The next prime is 13057403. The reversal of 13057397 is 79375031.

13057397 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79375031 = 6967 ⋅11393.

It is a cyclic number.

It is not a de Polignac number, because 13057397 - 2⁸ = 13057141 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 (13057327) 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, 91883 + ... + 92024.

It is an arithmetic number, because the mean of its divisors is an integer number (3310344).

Almost surely, 2^13057397 is an apocalyptic number.

It is an amenable number.

13057397 is a deficient number, since it is larger than the sum of its proper divisors (183979).

13057397 is an equidigital number, since it uses as much as digits as its factorization.

13057397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183978.

The product of its (nonzero) digits is 19845, while the sum is 35.

The square root of 13057397 is about 3613.5020409569. The cubic root of 13057397 is about 235.4790108757.

The spelling of 13057397 in words is "thirteen million, fifty-seven thousand, three hundred ninety-seven".