13210505 has 16 divisors (see below), whose sum is σ = 19764864. Its totient is φ = 8234880.

The previous prime is 13210501. The next prime is 13210507. The reversal of 13210505 is 50501231.

It is not a de Polignac number, because 13210505 - 2² = 13210501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13210501) 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 15 ways as a sum of consecutive naturals, for example, 16772 + ... + 17541.

It is an arithmetic number, because the mean of its divisors is an integer number (1235304).

Almost surely, 2^13210505 is an apocalyptic number.

It is an amenable number.

13210505 is a deficient number, since it is larger than the sum of its proper divisors (6554359).

13210505 is a wasteful number, since it uses less digits than its factorization.

13210505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34336.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 13210505 is about 3634.6258404408. The cubic root of 13210505 is about 236.3958274024.

Adding to 13210505 its reverse (50501231), we get a palindrome (63711736).

The spelling of 13210505 in words is "thirteen million, two hundred ten thousand, five hundred five".