13320245 has 4 divisors (see below), whose sum is σ = 15984300. Its totient is φ = 10656192.

The previous prime is 13320233. The next prime is 13320247. The reversal of 13320245 is 54202331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54202331 = 1201 ⋅45131.

It can be written as a sum of positive squares in 2 ways, for example, as 10491121 + 2829124 = 3239^2 + 1682^2 .

It is a cyclic number.

It is not a de Polignac number, because 13320245 - 2⁸ = 13319989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320247) 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, 1332020 + ... + 1332029.

It is an arithmetic number, because the mean of its divisors is an integer number (3996075).

Almost surely, 2^13320245 is an apocalyptic number.

It is an amenable number.

13320245 is a deficient number, since it is larger than the sum of its proper divisors (2664055).

13320245 is an equidigital number, since it uses as much as digits as its factorization.

13320245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664054.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 13320245 is about 3649.6910828178. The cubic root of 13320245 is about 237.0486052222.

Adding to 13320245 its reverse (54202331), we get a palindrome (67522576).

The spelling of 13320245 in words is "thirteen million, three hundred twenty thousand, two hundred forty-five".