13215145 has 8 divisors (see below), whose sum is σ = 16369920. Its totient is φ = 10230960.

The previous prime is 13215121. The next prime is 13215151. The reversal of 13215145 is 54151231.

It is a happy number.

13215145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13215145 - 2⁵ = 13215113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42475 + ... + 42784.

It is an arithmetic number, because the mean of its divisors is an integer number (2046240).

Almost surely, 2^13215145 is an apocalyptic number.

It is an amenable number.

13215145 is a deficient number, since it is larger than the sum of its proper divisors (3154775).

13215145 is an equidigital number, since it uses as much as digits as its factorization.

13215145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85295.

The product of its digits is 600, while the sum is 22.

The square root of 13215145 is about 3635.2640894438. The cubic root of 13215145 is about 236.4235010415.

Adding to 13215145 its reverse (54151231), we get a palindrome (67366376).

The spelling of 13215145 in words is "thirteen million, two hundred fifteen thousand, one hundred forty-five".