27916513 has 2 divisors, whose sum is σ = 27916514. Its totient is φ = 27916512.

The previous prime is 27916481. The next prime is 27916547. The reversal of 27916513 is 31561972.

It is an a-pointer prime, because the next prime (27916547) can be obtained adding 27916513 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18386944 + 9529569 = 4288^2 + 3087^2 .

It is a cyclic number.

It is not a de Polignac number, because 27916513 - 2⁵ = 27916481 is a prime.

It is not a weakly prime, because it can be changed into another prime (27916583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13958256 + 13958257.

It is an arithmetic number, because the mean of its divisors is an integer number (13958257).

Almost surely, 2^27916513 is an apocalyptic number.

It is an amenable number.

27916513 is a deficient number, since it is larger than the sum of its proper divisors (1).

27916513 is an equidigital number, since it uses as much as digits as its factorization.

27916513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 34.

The square root of 27916513 is about 5283.6079529049. The cubic root of 27916513 is about 303.3567923195.

The spelling of 27916513 in words is "twenty-seven million, nine hundred sixteen thousand, five hundred thirteen".