27053821 has 2 divisors, whose sum is σ = 27053822. Its totient is φ = 27053820.

The previous prime is 27053779. The next prime is 27053827. The reversal of 27053821 is 12835072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17131321 + 9922500 = 4139^2 + 3150^2 .

It is a cyclic number.

It is not a de Polignac number, because 27053821 - 2¹⁵ = 27021053 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27053821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27053827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13526910 + 13526911.

It is an arithmetic number, because the mean of its divisors is an integer number (13526911).

Almost surely, 2^27053821 is an apocalyptic number.

It is an amenable number.

27053821 is a deficient number, since it is larger than the sum of its proper divisors (1).

27053821 is an equidigital number, since it uses as much as digits as its factorization.

27053821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 27053821 is about 5201.3287725350. The cubic root of 27053821 is about 300.1992047327.

Adding to 27053821 its reverse (12835072), we get a palindrome (39888893).

The spelling of 27053821 in words is "twenty-seven million, fifty-three thousand, eight hundred twenty-one".