13353257 has 4 divisors (see below), whose sum is σ = 14056080. Its totient is φ = 12650436.

The previous prime is 13353247. The next prime is 13353259. The reversal of 13353257 is 75235331.

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: 75235331 = 137 ⋅549163.

It is a cyclic number.

It is not a de Polignac number, because 13353257 - 2¹⁰ = 13352233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13353259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351383 + ... + 351420.

It is an arithmetic number, because the mean of its divisors is an integer number (3514020).

Almost surely, 2^13353257 is an apocalyptic number.

It is an amenable number.

13353257 is a deficient number, since it is larger than the sum of its proper divisors (702823).

13353257 is an equidigital number, since it uses as much as digits as its factorization.

13353257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702822.

The product of its digits is 9450, while the sum is 29.

The square root of 13353257 is about 3654.2108587218. The cubic root of 13353257 is about 237.2442721125.

Adding to 13353257 its reverse (75235331), we get a palindrome (88588588).

The spelling of 13353257 in words is "thirteen million, three hundred fifty-three thousand, two hundred fifty-seven".