28051097 has 2 divisors, whose sum is σ = 28051098. Its totient is φ = 28051096.

The previous prime is 28051081. The next prime is 28051129. The reversal of 28051097 is 79015082.

It is an a-pointer prime, because the next prime (28051129) can be obtained adding 28051097 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28047616 + 3481 = 5296^2 + 59^2 .

It is a cyclic number.

It is not a de Polignac number, because 28051097 - 2⁴ = 28051081 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28051297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14025548 + 14025549.

It is an arithmetic number, because the mean of its divisors is an integer number (14025549).

Almost surely, 2^28051097 is an apocalyptic number.

It is an amenable number.

28051097 is a deficient number, since it is larger than the sum of its proper divisors (1).

28051097 is an equidigital number, since it uses as much as digits as its factorization.

28051097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 28051097 is about 5296.3286340634. The cubic root of 28051097 is about 303.8434999238.

The spelling of 28051097 in words is "twenty-eight million, fifty-one thousand, ninety-seven".