13257911 has 4 divisors (see below), whose sum is σ = 13362432. Its totient is φ = 13153392.

The previous prime is 13257869. The next prime is 13257919. The reversal of 13257911 is 11975231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11975231 = 29 ⋅412939.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13257911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13257919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52070 + ... + 52323.

It is an arithmetic number, because the mean of its divisors is an integer number (3340608).

Almost surely, 2^13257911 is an apocalyptic number.

13257911 is a deficient number, since it is larger than the sum of its proper divisors (104521).

13257911 is a wasteful number, since it uses less digits than its factorization.

13257911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104520.

The product of its digits is 1890, while the sum is 29.

The square root of 13257911 is about 3641.1414419108. The cubic root of 13257911 is about 236.6782592571.

The spelling of 13257911 in words is "thirteen million, two hundred fifty-seven thousand, nine hundred eleven".