13321505 has 8 divisors (see below), whose sum is σ = 16141632. Its totient is φ = 10553328.

The previous prime is 13321493. The next prime is 13321507. The reversal of 13321505 is 50512331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13321505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321507) 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, 12419 + ... + 13448.

It is an arithmetic number, because the mean of its divisors is an integer number (2017704).

Almost surely, 2^13321505 is an apocalyptic number.

It is an amenable number.

13321505 is a deficient number, since it is larger than the sum of its proper divisors (2820127).

13321505 is a wasteful number, since it uses less digits than its factorization.

13321505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25975.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 13321505 is about 3649.8636960851. The cubic root of 13321505 is about 237.0560793546.

Adding to 13321505 its reverse (50512331), we get a palindrome (63833836).

The spelling of 13321505 in words is "thirteen million, three hundred twenty-one thousand, five hundred five".