13445147 has 6 divisors (see below), whose sum is σ = 14282868. Its totient is φ = 12653984.

The previous prime is 13445137. The next prime is 13445161. The reversal of 13445147 is 74154431.

It is a happy number.

It is not a de Polignac number, because 13445147 - 2¹⁸ = 13183003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13445137) 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 5 ways as a sum of consecutive naturals, for example, 22973 + ... + 23550.

It is an arithmetic number, because the mean of its divisors is an integer number (2380478).

Almost surely, 2^13445147 is an apocalyptic number.

13445147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13445147 is a deficient number, since it is larger than the sum of its proper divisors (837721).

13445147 is an equidigital number, since it uses as much as digits as its factorization.

13445147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46557 (or 46540 counting only the distinct ones).

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

The square root of 13445147 is about 3666.7624684454. The cubic root of 13445147 is about 237.7872247988.

Adding to 13445147 its reverse (74154431), we get a palindrome (87599578).

The spelling of 13445147 in words is "thirteen million, four hundred forty-five thousand, one hundred forty-seven".