13257097 has 6 divisors (see below), whose sum is σ = 15421578. Its totient is φ = 11363184.

The previous prime is 13257077. The next prime is 13257107. The reversal of 13257097 is 79075231.

It can be written as a sum of positive squares in only one way, i.e., 10732176 + 2524921 = 3276^2 + 1589^2 .

It is not a de Polignac number, because 13257097 - 2¹⁹ = 12732809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13257007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135228 + ... + 135325.

It is an arithmetic number, because the mean of its divisors is an integer number (2570263).

Almost surely, 2^13257097 is an apocalyptic number.

It is an amenable number.

13257097 is a deficient number, since it is larger than the sum of its proper divisors (2164481).

13257097 is an equidigital number, since it uses as much as digits as its factorization.

13257097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270567 (or 270560 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 13257097 is about 3641.0296620599. The cubic root of 13257097 is about 236.6734153556.

The spelling of 13257097 in words is "thirteen million, two hundred fifty-seven thousand, ninety-seven".