13257047 has 4 divisors (see below), whose sum is σ = 13374480. Its totient is φ = 13139616.

The previous prime is 13257043. The next prime is 13257061. The reversal of 13257047 is 74075231.

13257047 is digitally balanced in base 2, 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 an emirpimes, since its reverse is a distinct semiprime: 74075231 = 103 ⋅719177.

It is a cyclic number.

It is not a de Polignac number, because 13257047 - 2² = 13257043 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 (13257043) 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, 58547 + ... + 58772.

It is an arithmetic number, because the mean of its divisors is an integer number (3343620).

Almost surely, 2^13257047 is an apocalyptic number.

13257047 is a deficient number, since it is larger than the sum of its proper divisors (117433).

13257047 is a wasteful number, since it uses less digits than its factorization.

13257047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117432.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 13257047 is about 3641.0227958638. The cubic root of 13257047 is about 236.6731178122.

The spelling of 13257047 in words is "thirteen million, two hundred fifty-seven thousand, forty-seven".