27160321 has 2 divisors, whose sum is σ = 27160322. Its totient is φ = 27160320.

The previous prime is 27160319. The next prime is 27160333. The reversal of 27160321 is 12306172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22429696 + 4730625 = 4736^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 27160321 - 2¹ = 27160319 is a prime.

Together with 27160319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 27160292 and 27160301.

It is not a weakly prime, because it can be changed into another prime (27160351) 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 as a sum of consecutive naturals, namely, 13580160 + 13580161.

It is an arithmetic number, because the mean of its divisors is an integer number (13580161).

Almost surely, 2^27160321 is an apocalyptic number.

It is an amenable number.

27160321 is a deficient number, since it is larger than the sum of its proper divisors (1).

27160321 is an equidigital number, since it uses as much as digits as its factorization.

27160321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 27160321 is about 5211.5564853506. The cubic root of 27160321 is about 300.5926100883.

Adding to 27160321 its reverse (12306172), we get a palindrome (39466493).

The spelling of 27160321 in words is "twenty-seven million, one hundred sixty thousand, three hundred twenty-one".