16452321 has 8 divisors (see below), whose sum is σ = 21983424. Its totient is φ = 10944720.

The previous prime is 16452301. The next prime is 16452323. The reversal of 16452321 is 12325461.

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

It is not a de Polignac number, because 16452321 - 2⁶ = 16452257 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16452291 and 16452300.

It is not an unprimeable number, because it can be changed into a prime (16452323) 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 7 ways as a sum of consecutive naturals, for example, 4170 + ... + 7091.

It is an arithmetic number, because the mean of its divisors is an integer number (2747928).

Almost surely, 2^16452321 is an apocalyptic number.

It is an amenable number.

16452321 is a deficient number, since it is larger than the sum of its proper divisors (5531103).

16452321 is a wasteful number, since it uses less digits than its factorization.

16452321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11751.

The product of its digits is 1440, while the sum is 24.

The square root of 16452321 is about 4056.1460772512. The cubic root of 16452321 is about 254.3367152769.

Adding to 16452321 its reverse (12325461), we get a palindrome (28777782).

The spelling of 16452321 in words is "sixteen million, four hundred fifty-two thousand, three hundred twenty-one".