16451227 has 4 divisors (see below), whose sum is σ = 17716720. Its totient is φ = 15185736.

The previous prime is 16451221. The next prime is 16451249. The reversal of 16451227 is 72215461.

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

It is a cyclic number.

It is not a de Polignac number, because 16451227 - 2³ = 16451219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16451195 and 16451204.

It is not an unprimeable number, because it can be changed into a prime (16451221) 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, 632727 + ... + 632752.

It is an arithmetic number, because the mean of its divisors is an integer number (4429180).

Almost surely, 2^16451227 is an apocalyptic number.

16451227 is a deficient number, since it is larger than the sum of its proper divisors (1265493).

16451227 is a wasteful number, since it uses less digits than its factorization.

16451227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265492.

The product of its digits is 3360, while the sum is 28.

The square root of 16451227 is about 4056.0112179332. The cubic root of 16451227 is about 254.3310777636.

Adding to 16451227 its reverse (72215461), we get a palindrome (88666688).

The spelling of 16451227 in words is "sixteen million, four hundred fifty-one thousand, two hundred twenty-seven".