16912261 has 4 divisors (see below), whose sum is σ = 17802400. Its totient is φ = 16022124.

The previous prime is 16912187. The next prime is 16912277. The reversal of 16912261 is 16221961.

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 16912261 - 2¹¹ = 16910213 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 (16912361) 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, 445041 + ... + 445078.

It is an arithmetic number, because the mean of its divisors is an integer number (4450600).

Almost surely, 2^16912261 is an apocalyptic number.

It is an amenable number.

16912261 is a deficient number, since it is larger than the sum of its proper divisors (890139).

16912261 is an equidigital number, since it uses as much as digits as its factorization.

16912261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890138.

The product of its digits is 1296, while the sum is 28.

The square root of 16912261 is about 4112.4519450080. The cubic root of 16912261 is about 256.6850396323.

The spelling of 16912261 in words is "sixteen million, nine hundred twelve thousand, two hundred sixty-one".