13084257 has 4 divisors (see below), whose sum is σ = 17445680. Its totient is φ = 8722836.

The previous prime is 13084243. The next prime is 13084261. The reversal of 13084257 is 75248031.

13084257 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75248031 = 3 ⋅25082677.

It is not a de Polignac number, because 13084257 - 2⁴ = 13084241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13084297) 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, 2180707 + ... + 2180712.

It is an arithmetic number, because the mean of its divisors is an integer number (4361420).

Almost surely, 2^13084257 is an apocalyptic number.

It is an amenable number.

13084257 is a deficient number, since it is larger than the sum of its proper divisors (4361423).

13084257 is an equidigital number, since it uses as much as digits as its factorization.

13084257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361422.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 13084257 is about 3617.2167477219. The cubic root of 13084257 is about 235.6403660119.

It can be divided in two parts, 1308 and 4257, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 13084257 in words is "thirteen million, eighty-four thousand, two hundred fifty-seven".