27224161 has 4 divisors (see below), whose sum is σ = 27235332. Its totient is φ = 27212992.

The previous prime is 27224159. The next prime is 27224179. The reversal of 27224161 is 16142272.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3027600 + 24196561 = 1740^2 + 4919^2 .

It is a cyclic number.

It is not a de Polignac number, because 27224161 - 2¹ = 27224159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27224261) 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 3 ways as a sum of consecutive naturals, for example, 196 + ... + 7381.

It is an arithmetic number, because the mean of its divisors is an integer number (6808833).

Almost surely, 2^27224161 is an apocalyptic number.

It is an amenable number.

27224161 is a deficient number, since it is larger than the sum of its proper divisors (11171).

27224161 is an equidigital number, since it uses as much as digits as its factorization.

27224161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11170.

The product of its digits is 1344, while the sum is 25.

The square root of 27224161 is about 5217.6777401446. The cubic root of 27224161 is about 300.8279388813.

The spelling of 27224161 in words is "twenty-seven million, two hundred twenty-four thousand, one hundred sixty-one".