27273013 has 2 divisors, whose sum is σ = 27273014. Its totient is φ = 27273012.

The previous prime is 27273011. The next prime is 27273031. The reversal of 27273013 is 31037272.

Together with next prime (27273031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23746129 + 3526884 = 4873^2 + 1878^2 .

It is a cyclic number.

It is not a de Polignac number, because 27273013 - 2¹ = 27273011 is a prime.

Together with 27273011, 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 (27273011) 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, 13636506 + 13636507.

It is an arithmetic number, because the mean of its divisors is an integer number (13636507).

Almost surely, 2^27273013 is an apocalyptic number.

It is an amenable number.

27273013 is a deficient number, since it is larger than the sum of its proper divisors (1).

27273013 is an equidigital number, since it uses as much as digits as its factorization.

27273013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 27273013 is about 5222.3570349029. The cubic root of 27273013 is about 301.0077701331.

The spelling of 27273013 in words is "twenty-seven million, two hundred seventy-three thousand, thirteen".