16321453 has 4 divisors (see below), whose sum is σ = 16346880. Its totient is φ = 16296028.

The previous prime is 16321451. The next prime is 16321457. The reversal of 16321453 is 35412361.

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: 35412361 = 5381 ⋅6581.

It is a cyclic number.

It is not a de Polignac number, because 16321453 - 2¹ = 16321451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16321451) 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, 11725 + ... + 13042.

It is an arithmetic number, because the mean of its divisors is an integer number (4086720).

Almost surely, 2^16321453 is an apocalyptic number.

It is an amenable number.

16321453 is a deficient number, since it is larger than the sum of its proper divisors (25427).

16321453 is an equidigital number, since it uses as much as digits as its factorization.

16321453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25426.

The product of its digits is 2160, while the sum is 25.

The square root of 16321453 is about 4039.9818068897. The cubic root of 16321453 is about 253.6605557259.

The spelling of 16321453 in words is "sixteen million, three hundred twenty-one thousand, four hundred fifty-three".