16221254 has 12 divisors (see below), whose sum is σ = 28304604. Its totient is φ = 6951924.

The previous prime is 16221253. The next prime is 16221311. The reversal of 16221254 is 45212261.

It is a happy number.

16221254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82664 + ... + 82859.

It is an arithmetic number, because the mean of its divisors is an integer number (2358717).

Almost surely, 2^16221254 is an apocalyptic number.

16221254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16221254 is a deficient number, since it is larger than the sum of its proper divisors (12083350).

16221254 is a wasteful number, since it uses less digits than its factorization.

16221254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165539 (or 165532 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 16221254 is about 4027.5617934428. The cubic root of 16221254 is about 253.1404075161.

The spelling of 16221254 in words is "sixteen million, two hundred twenty-one thousand, two hundred fifty-four".