27085381 has 2 divisors, whose sum is σ = 27085382. Its totient is φ = 27085380.

The previous prime is 27085363. The next prime is 27085411. The reversal of 27085381 is 18358072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25100100 + 1985281 = 5010^2 + 1409^2 .

It is a cyclic number.

It is not a de Polignac number, because 27085381 - 2⁵ = 27085349 is a prime.

It is a super-2 number, since 2×27085381² = 1467235727830322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27085181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13542690 + 13542691.

It is an arithmetic number, because the mean of its divisors is an integer number (13542691).

Almost surely, 2^27085381 is an apocalyptic number.

It is an amenable number.

27085381 is a deficient number, since it is larger than the sum of its proper divisors (1).

27085381 is an equidigital number, since it uses as much as digits as its factorization.

27085381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 27085381 is about 5204.3617283967. The cubic root of 27085381 is about 300.3158931808.

The spelling of 27085381 in words is "twenty-seven million, eighty-five thousand, three hundred eighty-one".