27002981 has 2 divisors, whose sum is σ = 27002982. Its totient is φ = 27002980.

The previous prime is 27002929. The next prime is 27003019. The reversal of 27002981 is 18920072.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17181025 + 9821956 = 4145^2 + 3134^2 .

It is a cyclic number.

It is not a de Polignac number, because 27002981 - 2¹⁸ = 26740837 is a prime.

It is a super-2 number, since 2×27002981² = 1458321965772722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27002881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13501490 + 13501491.

It is an arithmetic number, because the mean of its divisors is an integer number (13501491).

Almost surely, 2^27002981 is an apocalyptic number.

It is an amenable number.

27002981 is a deficient number, since it is larger than the sum of its proper divisors (1).

27002981 is an equidigital number, since it uses as much as digits as its factorization.

27002981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 27002981 is about 5196.4392616483. The cubic root of 27002981 is about 300.0110403344.

The spelling of 27002981 in words is "twenty-seven million, two thousand, nine hundred eighty-one".