16005453 has 4 divisors (see below), whose sum is σ = 21340608. Its totient is φ = 10670300.

The previous prime is 16005443. The next prime is 16005463. The reversal of 16005453 is 35450061.

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.

It is an interprime number because it is at equal distance from previous prime (16005443) and next prime (16005463).

It is a cyclic number.

It is not a de Polignac number, because 16005453 - 2⁵ = 16005421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16005413) 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 3 ways as a sum of consecutive naturals, for example, 2667573 + ... + 2667578.

It is an arithmetic number, because the mean of its divisors is an integer number (5335152).

Almost surely, 2^16005453 is an apocalyptic number.

It is an amenable number.

16005453 is a deficient number, since it is larger than the sum of its proper divisors (5335155).

16005453 is an equidigital number, since it uses as much as digits as its factorization.

16005453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335154.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 16005453 is about 4000.6815669333. The cubic root of 16005453 is about 252.0128331837.

Subtracting from 16005453 its product of nonzero digits (1800), we obtain a triangular number (16003653 = T₅₆₅₇).

The spelling of 16005453 in words is "sixteen million, five thousand, four hundred fifty-three".