528128243 has 2 divisors, whose sum is σ = 528128244. Its totient is φ = 528128242.

The previous prime is 528128221. The next prime is 528128261. The reversal of 528128243 is 342821825.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 528128243 - 2¹² = 528124147 is a prime.

It is not a weakly prime, because it can be changed into another prime (528125243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264064121 + 264064122.

It is an arithmetic number, because the mean of its divisors is an integer number (264064122).

Almost surely, 2^528128243 is an apocalyptic number.

528128243 is a deficient number, since it is larger than the sum of its proper divisors (1).

528128243 is an equidigital number, since it uses as much as digits as its factorization.

528128243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 35.

The square root of 528128243 is about 22981.0409468327. The cubic root of 528128243 is about 808.3134357899.

The spelling of 528128243 in words is "five hundred twenty-eight million, one hundred twenty-eight thousand, two hundred forty-three".