27127129 has 2 divisors, whose sum is σ = 27127130. Its totient is φ = 27127128.

The previous prime is 27127081. The next prime is 27127141. The reversal of 27127129 is 92172172.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20115225 + 7011904 = 4485^2 + 2648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27127129 is a prime.

It is a super-2 number, since 2×27127129² = 1471762255565282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27127129.

It is not a weakly prime, because it can be changed into another prime (27127159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13563564 + 13563565.

It is an arithmetic number, because the mean of its divisors is an integer number (13563565).

Almost surely, 2^27127129 is an apocalyptic number.

It is an amenable number.

27127129 is a deficient number, since it is larger than the sum of its proper divisors (1).

27127129 is an equidigital number, since it uses as much as digits as its factorization.

27127129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 31.

The square root of 27127129 is about 5208.3710505301. The cubic root of 27127129 is about 300.4701110819.

The spelling of 27127129 in words is "twenty-seven million, one hundred twenty-seven thousand, one hundred twenty-nine".