27135217 has 2 divisors, whose sum is σ = 27135218. Its totient is φ = 27135216.

The previous prime is 27135203. The next prime is 27135253. The reversal of 27135217 is 71253172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20830096 + 6305121 = 4564^2 + 2511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27135217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27135817) 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, 13567608 + 13567609.

It is an arithmetic number, because the mean of its divisors is an integer number (13567609).

Almost surely, 2^27135217 is an apocalyptic number.

It is an amenable number.

27135217 is a deficient number, since it is larger than the sum of its proper divisors (1).

27135217 is an equidigital number, since it uses as much as digits as its factorization.

27135217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2940, while the sum is 28.

The square root of 27135217 is about 5209.1474350416. The cubic root of 27135217 is about 300.4999700075.

Adding to 27135217 its reverse (71253172), we get a palindrome (98388389).

The spelling of 27135217 in words is "twenty-seven million, one hundred thirty-five thousand, two hundred seventeen".