15442227 has 12 divisors (see below), whose sum is σ = 22639240. Its totient is φ = 10140768.

The previous prime is 15442187. The next prime is 15442249. The reversal of 15442227 is 72224451.

It is not a de Polignac number, because 15442227 - 2⁸ = 15441971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15442227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15442267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12202 + ... + 13407.

Almost surely, 2^15442227 is an apocalyptic number.

15442227 is a deficient number, since it is larger than the sum of its proper divisors (7197013).

15442227 is a wasteful number, since it uses less digits than its factorization.

15442227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25682 (or 25679 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 15442227 is about 3929.6599089489. The cubic root of 15442227 is about 249.0213849152.

Adding to 15442227 its reverse (72224451), we get a palindrome (87666678).

It can be divided in two parts, 154422 and 27, that added together give a square (154449 = 393²).

The spelling of 15442227 in words is "fifteen million, four hundred forty-two thousand, two hundred twenty-seven".