13145447 has 8 divisors (see below), whose sum is σ = 15061536. Its totient is φ = 11238912.

The previous prime is 13145417. The next prime is 13145449. The reversal of 13145447 is 74454131.

It is a happy number.

13145447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13145447 - 2¹⁰ = 13144423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863 + ... + 5199.

It is an arithmetic number, because the mean of its divisors is an integer number (1882692).

Almost surely, 2^13145447 is an apocalyptic number.

13145447 is a deficient number, since it is larger than the sum of its proper divisors (1916089).

13145447 is an equidigital number, since it uses as much as digits as its factorization.

13145447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777.

The product of its digits is 6720, while the sum is 29.

The square root of 13145447 is about 3625.6650424439. The cubic root of 13145447 is about 236.0071277652.

Adding to 13145447 its reverse (74454131), we get a palindrome (87599578).

The spelling of 13145447 in words is "thirteen million, one hundred forty-five thousand, four hundred forty-seven".