27088381 has 2 divisors, whose sum is σ = 27088382. Its totient is φ = 27088380.

The previous prime is 27088363. The next prime is 27088387. The reversal of 27088381 is 18388072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17222500 + 9865881 = 4150^2 + 3141^2 .

It is a cyclic number.

It is not a de Polignac number, because 27088381 - 2⁷ = 27088253 is a prime.

It is a super-2 number, since 2×27088381² = 1467560770402322, which contains 22 as substring.

It is equal to p_1688239 and since 27088381 and 1688239 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27088381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27088387) 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, 13544190 + 13544191.

It is an arithmetic number, because the mean of its divisors is an integer number (13544191).

Almost surely, 2^27088381 is an apocalyptic number.

It is an amenable number.

27088381 is a deficient number, since it is larger than the sum of its proper divisors (1).

27088381 is an equidigital number, since it uses as much as digits as its factorization.

27088381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 27088381 is about 5204.6499401977. The cubic root of 27088381 is about 300.3269805200.

The spelling of 27088381 in words is "twenty-seven million, eighty-eight thousand, three hundred eighty-one".