27115129 has 2 divisors, whose sum is σ = 27115130. Its totient is φ = 27115128.

The previous prime is 27115103. The next prime is 27115159. The reversal of 27115129 is 92151172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27092025 + 23104 = 5205^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 27115129 - 2⁵ = 27115097 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 27115097 and 27115106.

It is not a weakly prime, because it can be changed into another prime (27115159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13557564 + 13557565.

It is an arithmetic number, because the mean of its divisors is an integer number (13557565).

Almost surely, 2^27115129 is an apocalyptic number.

It is an amenable number.

27115129 is a deficient number, since it is larger than the sum of its proper divisors (1).

27115129 is an equidigital number, since it uses as much as digits as its factorization.

27115129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 28.

The square root of 27115129 is about 5207.2189314451. The cubic root of 27115129 is about 300.4257990683.

It can be divided in two parts, 271 and 15129, that added together give a triangular number (15400 = T₁₇₅).

The spelling of 27115129 in words is "twenty-seven million, one hundred fifteen thousand, one hundred twenty-nine".