27987103 has 2 divisors, whose sum is σ = 27987104. Its totient is φ = 27987102.

The previous prime is 27987101. The next prime is 27987121. The reversal of 27987103 is 30178972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27987103 - 2¹ = 27987101 is a prime.

Together with 27987101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27987101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13993551 + 13993552.

It is an arithmetic number, because the mean of its divisors is an integer number (13993552).

Almost surely, 2^27987103 is an apocalyptic number.

27987103 is a deficient number, since it is larger than the sum of its proper divisors (1).

27987103 is an equidigital number, since it uses as much as digits as its factorization.

27987103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 27987103 is about 5290.2838298148. The cubic root of 27987103 is about 303.6122675418.

The spelling of 27987103 in words is "twenty-seven million, nine hundred eighty-seven thousand, one hundred three".