16224655 has 4 divisors (see below), whose sum is σ = 19469592. Its totient is φ = 12979720.

The previous prime is 16224641. The next prime is 16224671. The reversal of 16224655 is 55642261.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16224655 - 2¹⁵ = 16191887 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1622461 + ... + 1622470.

It is an arithmetic number, because the mean of its divisors is an integer number (4867398).

Almost surely, 2^16224655 is an apocalyptic number.

16224655 is a deficient number, since it is larger than the sum of its proper divisors (3244937).

16224655 is an equidigital number, since it uses as much as digits as its factorization.

16224655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244936.

The product of its digits is 14400, while the sum is 31.

The square root of 16224655 is about 4027.9839870585. The cubic root of 16224655 is about 253.1580976890.

The spelling of 16224655 in words is "sixteen million, two hundred twenty-four thousand, six hundred fifty-five".