16909253 has 4 divisors (see below), whose sum is σ = 16964640. Its totient is φ = 16853868.

The previous prime is 16909247. The next prime is 16909273. The reversal of 16909253 is 35290961.

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 16909253 - 2¹⁸ = 16647109 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 (16909273) 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, 27233 + ... + 27846.

It is an arithmetic number, because the mean of its divisors is an integer number (4241160).

Almost surely, 2^16909253 is an apocalyptic number.

It is an amenable number.

16909253 is a deficient number, since it is larger than the sum of its proper divisors (55387).

16909253 is an equidigital number, since it uses as much as digits as its factorization.

16909253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55386.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 16909253 is about 4112.0862101858. The cubic root of 16909253 is about 256.6698208042.

The spelling of 16909253 in words is "sixteen million, nine hundred nine thousand, two hundred fifty-three".