13074257 has 4 divisors (see below), whose sum is σ = 14942016. Its totient is φ = 11206500.

The previous prime is 13074253. The next prime is 13074277. The reversal of 13074257 is 75247031.

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: 75247031 = 211 ⋅356621.

It is a cyclic number.

It is not a de Polignac number, because 13074257 - 2² = 13074253 is a prime.

It is a super-2 number, since 2×13074257² = 341872392204098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13074253) 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, 933869 + ... + 933882.

It is an arithmetic number, because the mean of its divisors is an integer number (3735504).

Almost surely, 2^13074257 is an apocalyptic number.

It is an amenable number.

13074257 is a deficient number, since it is larger than the sum of its proper divisors (1867759).

13074257 is an equidigital number, since it uses as much as digits as its factorization.

13074257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867758.

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

The square root of 13074257 is about 3615.8342052699. The cubic root of 13074257 is about 235.5803191879.

It can be divided in two parts, 13074 and 257, that added together give a palindrome (13331).

The spelling of 13074257 in words is "thirteen million, seventy-four thousand, two hundred fifty-seven".