27603139 has 2 divisors, whose sum is σ = 27603140. Its totient is φ = 27603138.

The previous prime is 27603137. The next prime is 27603161. The reversal of 27603139 is 93130672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27603139 - 2¹ = 27603137 is a prime.

Together with 27603137, it forms a pair of twin primes.

It is equal to p_1718338 and since 27603139 and 1718338 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27603139.

It is not a weakly prime, because it can be changed into another prime (27603133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13801569 + 13801570.

It is an arithmetic number, because the mean of its divisors is an integer number (13801570).

Almost surely, 2^27603139 is an apocalyptic number.

27603139 is a deficient number, since it is larger than the sum of its proper divisors (1).

27603139 is an equidigital number, since it uses as much as digits as its factorization.

27603139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 27603139 is about 5253.8689553509. The cubic root of 27603139 is about 302.2174179590.

The spelling of 27603139 in words is "twenty-seven million, six hundred three thousand, one hundred thirty-nine".