28055017 has 2 divisors, whose sum is σ = 28055018. Its totient is φ = 28055016.

The previous prime is 28055003. The next prime is 28055021. The reversal of 28055017 is 71055082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20894041 + 7160976 = 4571^2 + 2676^2 .

It is a cyclic number.

It is not a de Polignac number, because 28055017 - 2⁷ = 28054889 is a prime.

It is not a weakly prime, because it can be changed into another prime (28055047) 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, 14027508 + 14027509.

It is an arithmetic number, because the mean of its divisors is an integer number (14027509).

Almost surely, 2^28055017 is an apocalyptic number.

It is an amenable number.

28055017 is a deficient number, since it is larger than the sum of its proper divisors (1).

28055017 is an equidigital number, since it uses as much as digits as its factorization.

28055017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 28055017 is about 5296.6986888061. The cubic root of 28055017 is about 303.8576527992.

The spelling of 28055017 in words is "twenty-eight million, fifty-five thousand, seventeen".