13005001 has 4 divisors (see below), whose sum is σ = 13018900. Its totient is φ = 12991104.

The previous prime is 13004993. The next prime is 13005007. The reversal of 13005001 is 10050031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6245001 + 6760000 = 2499^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 13005001 - 2³ = 13004993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13005007) 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, 5436 + ... + 7453.

It is an arithmetic number, because the mean of its divisors is an integer number (3254725).

Almost surely, 2^13005001 is an apocalyptic number.

It is an amenable number.

13005001 is a deficient number, since it is larger than the sum of its proper divisors (13899).

13005001 is a wasteful number, since it uses less digits than its factorization.

13005001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13898.

The product of its (nonzero) digits is 15, while the sum is 10.

The square root of 13005001 is about 3606.2447226998. The cubic root of 13005001 is about 235.1636162521.

Adding to 13005001 its reverse (10050031), we get a palindrome (23055032).

The spelling of 13005001 in words is "thirteen million, five thousand, one".