16605253 has 4 divisors (see below), whose sum is σ = 18977440. Its totient is φ = 14233068.

The previous prime is 16605233. The next prime is 16605263. The reversal of 16605253 is 35250661.

16605253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 16605253 - 2¹⁷ = 16474181 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 (16605203) 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, 1186083 + ... + 1186096.

It is an arithmetic number, because the mean of its divisors is an integer number (4744360).

Almost surely, 2^16605253 is an apocalyptic number.

It is an amenable number.

16605253 is a deficient number, since it is larger than the sum of its proper divisors (2372187).

16605253 is an equidigital number, since it uses as much as digits as its factorization.

16605253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372186.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 16605253 is about 4074.9543555726. The cubic root of 16605253 is about 255.1223454944.

The spelling of 16605253 in words is "sixteen million, six hundred five thousand, two hundred fifty-three".