16251227 has 4 divisors (see below), whose sum is σ = 16354896. Its totient is φ = 16147560.

The previous prime is 16251199. The next prime is 16251239. The reversal of 16251227 is 72215261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72215261 = 1051 ⋅68711.

It is a cyclic number.

It is not a de Polignac number, because 16251227 - 2¹⁴ = 16234843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16251196 and 16251205.

It is not an unprimeable number, because it can be changed into a prime (16251247) 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, 51599 + ... + 51912.

It is an arithmetic number, because the mean of its divisors is an integer number (4088724).

Almost surely, 2^16251227 is an apocalyptic number.

16251227 is a deficient number, since it is larger than the sum of its proper divisors (103669).

16251227 is a wasteful number, since it uses less digits than its factorization.

16251227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103668.

The product of its digits is 1680, while the sum is 26.

The square root of 16251227 is about 4031.2810618958. The cubic root of 16251227 is about 253.2962259053.

Adding to 16251227 its reverse (72215261), we get a palindrome (88466488).

The spelling of 16251227 in words is "sixteen million, two hundred fifty-one thousand, two hundred twenty-seven".