13455215 has 4 divisors (see below), whose sum is σ = 16146264. Its totient is φ = 10764168.

The previous prime is 13455191. The next prime is 13455223. The reversal of 13455215 is 51255431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13455215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345517 + ... + 1345526.

It is an arithmetic number, because the mean of its divisors is an integer number (4036566).

Almost surely, 2^13455215 is an apocalyptic number.

13455215 is a deficient number, since it is larger than the sum of its proper divisors (2691049).

13455215 is an equidigital number, since it uses as much as digits as its factorization.

13455215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691048.

The product of its digits is 3000, while the sum is 26.

The square root of 13455215 is about 3668.1350847536. The cubic root of 13455215 is about 237.8465632961.

The spelling of 13455215 in words is "thirteen million, four hundred fifty-five thousand, two hundred fifteen".