27089281 has 2 divisors, whose sum is σ = 27089282. Its totient is φ = 27089280.

The previous prime is 27089267. The next prime is 27089329. The reversal of 27089281 is 18298072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21013056 + 6076225 = 4584^2 + 2465^2 .

It is a cyclic number.

It is not a de Polignac number, because 27089281 - 2²³ = 18700673 is a prime.

It is a super-2 number, since 2×27089281² = 1467658290193922, 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 27089281.

It is not a weakly prime, because it can be changed into another prime (27089221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13544640 + 13544641.

It is an arithmetic number, because the mean of its divisors is an integer number (13544641).

Almost surely, 2^27089281 is an apocalyptic number.

It is an amenable number.

27089281 is a deficient number, since it is larger than the sum of its proper divisors (1).

27089281 is an equidigital number, since it uses as much as digits as its factorization.

27089281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 27089281 is about 5204.7364006259. The cubic root of 27089281 is about 300.3303065621.

The spelling of 27089281 in words is "twenty-seven million, eighty-nine thousand, two hundred eighty-one".