13215441 has 4 divisors (see below), whose sum is σ = 17620592. Its totient is φ = 8810292.

The previous prime is 13215439. The next prime is 13215457. The reversal of 13215441 is 14451231.

13215441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13215441 - 2¹ = 13215439 is a prime.

It is a super-3 number, since 3×13215441³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13215421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202571 + ... + 2202576.

It is an arithmetic number, because the mean of its divisors is an integer number (4405148).

Almost surely, 2^13215441 is an apocalyptic number.

It is an amenable number.

13215441 is a deficient number, since it is larger than the sum of its proper divisors (4405151).

13215441 is an equidigital number, since it uses as much as digits as its factorization.

13215441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405150.

The product of its digits is 480, while the sum is 21.

The square root of 13215441 is about 3635.3048015263. The cubic root of 13215441 is about 236.4252662090.

Adding to 13215441 its reverse (14451231), we get a palindrome (27666672).

The spelling of 13215441 in words is "thirteen million, two hundred fifteen thousand, four hundred forty-one".