27055813 has 2 divisors, whose sum is σ = 27055814. Its totient is φ = 27055812.

The previous prime is 27055793. The next prime is 27055849. The reversal of 27055813 is 31855072.

27055813 is nontrivially palindromic in base 13.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24930049 + 2125764 = 4993^2 + 1458^2 .

It is a cyclic number.

It is not a de Polignac number, because 27055813 - 2⁵ = 27055781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27055883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13527906 + 13527907.

It is an arithmetic number, because the mean of its divisors is an integer number (13527907).

Almost surely, 2^27055813 is an apocalyptic number.

It is an amenable number.

27055813 is a deficient number, since it is larger than the sum of its proper divisors (1).

27055813 is an equidigital number, since it uses as much as digits as its factorization.

27055813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 27055813 is about 5201.5202585398. The cubic root of 27055813 is about 300.2065725415.

The spelling of 27055813 in words is "twenty-seven million, fifty-five thousand, eight hundred thirteen".