13257001 has 4 divisors (see below), whose sum is σ = 13314132. Its totient is φ = 13199872.

The previous prime is 13256987. The next prime is 13257007. The reversal of 13257001 is 10075231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10075231 = 149 ⋅67619.

It can be written as a sum of positive squares in 2 ways, for example, as 1000000 + 12257001 = 1000^2 + 3501^2 .

It is a cyclic number.

It is not a de Polignac number, because 13257001 - 2²¹ = 11159849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13257001.

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 3 ways as a sum of consecutive naturals, for example, 28216 + ... + 28681.

It is an arithmetic number, because the mean of its divisors is an integer number (3328533).

Almost surely, 2^13257001 is an apocalyptic number.

It is an amenable number.

13257001 is a deficient number, since it is larger than the sum of its proper divisors (57131).

13257001 is an equidigital number, since it uses as much as digits as its factorization.

13257001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57130.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 13257001 is about 3641.0164789520. The cubic root of 13257001 is about 236.6728440716.

The spelling of 13257001 in words is "thirteen million, two hundred fifty-seven thousand, one".