15224161 has 4 divisors (see below), whose sum is σ = 15595524. Its totient is φ = 14852800.

The previous prime is 15224147. The next prime is 15224177. The reversal of 15224161 is 16142251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16142251 = 23 ⋅701837.

It can be written as a sum of positive squares in 2 ways, for example, as 547600 + 14676561 = 740^2 + 3831^2 .

It is a cyclic number.

It is not a de Polignac number, because 15224161 - 2¹⁹ = 14699873 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15221161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185620 + ... + 185701.

It is an arithmetic number, because the mean of its divisors is an integer number (3898881).

Almost surely, 2^15224161 is an apocalyptic number.

It is an amenable number.

15224161 is a deficient number, since it is larger than the sum of its proper divisors (371363).

15224161 is an equidigital number, since it uses as much as digits as its factorization.

15224161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371362.

The product of its digits is 480, while the sum is 22.

The square root of 15224161 is about 3901.8150904419. The cubic root of 15224161 is about 247.8436460262.

The spelling of 15224161 in words is "fifteen million, two hundred twenty-four thousand, one hundred sixty-one".