16055221 has 8 divisors (see below), whose sum is σ = 19760384. Its totient is φ = 12702960.

The previous prime is 16055203. The next prime is 16055233. The reversal of 16055221 is 12255061.

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 16055221 - 2⁵ = 16055189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16055192 and 16055201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16055321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88125 + ... + 88306.

It is an arithmetic number, because the mean of its divisors is an integer number (2470048).

Almost surely, 2^16055221 is an apocalyptic number.

It is an amenable number.

16055221 is a deficient number, since it is larger than the sum of its proper divisors (3705163).

16055221 is a wasteful number, since it uses less digits than its factorization.

16055221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176451.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 16055221 is about 4006.8966794765. The cubic root of 16055221 is about 252.2737691988.

The spelling of 16055221 in words is "sixteen million, fifty-five thousand, two hundred twenty-one".