16053221 has 2 divisors, whose sum is σ = 16053222. Its totient is φ = 16053220.

The previous prime is 16053217. The next prime is 16053229. The reversal of 16053221 is 12235061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12496225 + 3556996 = 3535^2 + 1886^2 .

It is a cyclic number.

It is not a de Polignac number, because 16053221 - 2² = 16053217 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16053193 and 16053202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16053229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8026610 + 8026611.

It is an arithmetic number, because the mean of its divisors is an integer number (8026611).

Almost surely, 2^16053221 is an apocalyptic number.

It is an amenable number.

16053221 is a deficient number, since it is larger than the sum of its proper divisors (1).

16053221 is an equidigital number, since it uses as much as digits as its factorization.

16053221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 16053221 is about 4006.6471020044. The cubic root of 16053221 is about 252.2632935101.

Adding to 16053221 its reverse (12235061), we get a palindrome (28288282).

The spelling of 16053221 in words is "sixteen million, fifty-three thousand, two hundred twenty-one".