27240013 has 2 divisors, whose sum is σ = 27240014. Its totient is φ = 27240012.

The previous prime is 27240011. The next prime is 27240049. The reversal of 27240013 is 31004272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14722569 + 12517444 = 3837^2 + 3538^2 .

It is a cyclic number.

It is not a de Polignac number, because 27240013 - 2¹ = 27240011 is a prime.

Together with 27240011, 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 (27240011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13620006 + 13620007.

It is an arithmetic number, because the mean of its divisors is an integer number (13620007).

Almost surely, 2^27240013 is an apocalyptic number.

It is an amenable number.

27240013 is a deficient number, since it is larger than the sum of its proper divisors (1).

27240013 is an equidigital number, since it uses as much as digits as its factorization.

27240013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 27240013 is about 5219.1965856825. The cubic root of 27240013 is about 300.8863159385.

Adding to 27240013 its reverse (31004272), we get a palindrome (58244285).

The spelling of 27240013 in words is "twenty-seven million, two hundred forty thousand, thirteen".