16645453 has 8 divisors (see below), whose sum is σ = 18415296. Its totient is φ = 14918400.

The previous prime is 16645427. The next prime is 16645469. The reversal of 16645453 is 35454661.

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

It is a cyclic number.

It is not a de Polignac number, because 16645453 - 2¹³ = 16637261 is a prime.

It is a super-2 number, since 2×16645453² = 554142211150418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16645483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9876 + ... + 11437.

It is an arithmetic number, because the mean of its divisors is an integer number (2301912).

Almost surely, 2^16645453 is an apocalyptic number.

It is an amenable number.

16645453 is a deficient number, since it is larger than the sum of its proper divisors (1769843).

16645453 is a wasteful number, since it uses less digits than its factorization.

16645453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21395.

The product of its digits is 43200, while the sum is 34.

The square root of 16645453 is about 4079.8839444278. The cubic root of 16645453 is about 255.3280565657.

It can be divided in two parts, 1664 and 5453, that added together give a palindrome (7117).

The spelling of 16645453 in words is "sixteen million, six hundred forty-five thousand, four hundred fifty-three".