16453217 has 6 divisors (see below), whose sum is σ = 18085074. Its totient is φ = 14957360.

The previous prime is 16453201. The next prime is 16453247. The reversal of 16453217 is 71235461.

It can be written as a sum of positive squares in only one way, i.e., 16032016 + 421201 = 4004^2 + 649^2 .

It is not a de Polignac number, because 16453217 - 2⁴ = 16453201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16453217.

It is not an unprimeable number, because it can be changed into a prime (16453247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67868 + ... + 68109.

It is an arithmetic number, because the mean of its divisors is an integer number (3014179).

Almost surely, 2^16453217 is an apocalyptic number.

It is an amenable number.

16453217 is a deficient number, since it is larger than the sum of its proper divisors (1631857).

16453217 is a wasteful number, since it uses less digits than its factorization.

16453217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135999 (or 135988 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 16453217 is about 4056.2565254185. The cubic root of 16453217 is about 254.3413322863.

Adding to 16453217 its reverse (71235461), we get a palindrome (87688678).

The spelling of 16453217 in words is "sixteen million, four hundred fifty-three thousand, two hundred seventeen".