13217401 has 4 divisors (see below), whose sum is σ = 13225972. Its totient is φ = 13208832.

The previous prime is 13217363. The next prime is 13217423. The reversal of 13217401 is 10471231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10471231 = 43 ⋅243517.

It can be written as a sum of positive squares in 2 ways, for example, as 8037225 + 5180176 = 2835^2 + 2276^2 .

It is a cyclic number.

It is not a de Polignac number, because 13217401 - 2⁷ = 13217273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13217441) 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, 1260 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (3306493).

Almost surely, 2^13217401 is an apocalyptic number.

It is an amenable number.

13217401 is a deficient number, since it is larger than the sum of its proper divisors (8571).

13217401 is an equidigital number, since it uses as much as digits as its factorization.

13217401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 13217401 is about 3635.5743700274. The cubic root of 13217401 is about 236.4369538153.

Adding to 13217401 its reverse (10471231), we get a palindrome (23688632).

The spelling of 13217401 in words is "thirteen million, two hundred seventeen thousand, four hundred one".