13955217 has 4 divisors (see below), whose sum is σ = 18606960. Its totient is φ = 9303476.

The previous prime is 13955213. The next prime is 13955219. The reversal of 13955217 is 71255931.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71255931 = 3 ⋅23751977.

It is a cyclic number.

It is not a de Polignac number, because 13955217 - 2² = 13955213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13955213) 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 3 ways as a sum of consecutive naturals, for example, 2325867 + ... + 2325872.

It is an arithmetic number, because the mean of its divisors is an integer number (4651740).

Almost surely, 2^13955217 is an apocalyptic number.

It is an amenable number.

13955217 is a deficient number, since it is larger than the sum of its proper divisors (4651743).

13955217 is an equidigital number, since it uses as much as digits as its factorization.

13955217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651742.

The product of its digits is 9450, while the sum is 33.

The square root of 13955217 is about 3735.6682133187. The cubic root of 13955217 is about 240.7569676288.

The spelling of 13955217 in words is "thirteen million, nine hundred fifty-five thousand, two hundred seventeen".