27882121 has 2 divisors, whose sum is σ = 27882122. Its totient is φ = 27882120.

The previous prime is 27882073. The next prime is 27882133. The reversal of 27882121 is 12128872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27878400 + 3721 = 5280^2 + 61^2 .

It is a cyclic number.

It is not a de Polignac number, because 27882121 - 2⁷ = 27881993 is a prime.

It is not a weakly prime, because it can be changed into another prime (27882191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13941060 + 13941061.

It is an arithmetic number, because the mean of its divisors is an integer number (13941061).

Almost surely, 2^27882121 is an apocalyptic number.

It is an amenable number.

27882121 is a deficient number, since it is larger than the sum of its proper divisors (1).

27882121 is an equidigital number, since it uses as much as digits as its factorization.

27882121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 31.

The square root of 27882121 is about 5280.3523556672. The cubic root of 27882121 is about 303.2321667488.

The spelling of 27882121 in words is "twenty-seven million, eight hundred eighty-two thousand, one hundred twenty-one".