13169257 has 4 divisors (see below), whose sum is σ = 13176576. Its totient is φ = 13161940.

The previous prime is 13169249. The next prime is 13169263. The reversal of 13169257 is 75296131.

13169257 is digitally balanced in base 2 and base 3, because in such bases 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13169257 - 2³ = 13169249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13169207) 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, 1128 + ... + 5254.

It is an arithmetic number, because the mean of its divisors is an integer number (3294144).

Almost surely, 2^13169257 is an apocalyptic number.

It is an amenable number.

13169257 is a deficient number, since it is larger than the sum of its proper divisors (7319).

13169257 is an equidigital number, since it uses as much as digits as its factorization.

13169257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7318.

The product of its digits is 11340, while the sum is 34.

The square root of 13169257 is about 3628.9470924774. The cubic root of 13169257 is about 236.1495329748.

The spelling of 13169257 in words is "thirteen million, one hundred sixty-nine thousand, two hundred fifty-seven".