27010981 has 2 divisors, whose sum is σ = 27010982. Its totient is φ = 27010980.

The previous prime is 27010937. The next prime is 27010987. The reversal of 27010981 is 18901072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13942756 + 13068225 = 3734^2 + 3615^2 .

It is a cyclic number.

It is not a de Polignac number, because 27010981 - 2¹⁵ = 26978213 is a prime.

It is a super-2 number, since 2×27010981² = 1459186189164722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27010987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13505490 + 13505491.

It is an arithmetic number, because the mean of its divisors is an integer number (13505491).

Almost surely, 2^27010981 is an apocalyptic number.

It is an amenable number.

27010981 is a deficient number, since it is larger than the sum of its proper divisors (1).

27010981 is an equidigital number, since it uses as much as digits as its factorization.

27010981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 27010981 is about 5197.2089625106. The cubic root of 27010981 is about 300.0406648580.

The spelling of 27010981 in words is "twenty-seven million, ten thousand, nine hundred eighty-one".