27826121 has 2 divisors, whose sum is σ = 27826122. Its totient is φ = 27826120.

The previous prime is 27826079. The next prime is 27826133. The reversal of 27826121 is 12162872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20830096 + 6996025 = 4564^2 + 2645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27826121 is a prime.

It is not a weakly prime, because it can be changed into another prime (27826181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13913060 + 13913061.

It is an arithmetic number, because the mean of its divisors is an integer number (13913061).

Almost surely, 2^27826121 is an apocalyptic number.

It is an amenable number.

27826121 is a deficient number, since it is larger than the sum of its proper divisors (1).

27826121 is an equidigital number, since it uses as much as digits as its factorization.

27826121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 29.

The square root of 27826121 is about 5275.0470140085. The cubic root of 27826121 is about 303.0290212448.

Adding to 27826121 its reverse (12162872), we get a palindrome (39988993).

The spelling of 27826121 in words is "twenty-seven million, eight hundred twenty-six thousand, one hundred twenty-one".