528121801 has 2 divisors, whose sum is σ = 528121802. Its totient is φ = 528121800.

The previous prime is 528121729. The next prime is 528121843. The reversal of 528121801 is 108121825.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 522168201 + 5953600 = 22851^2 + 2440^2 .

It is a cyclic number.

It is not a de Polignac number, because 528121801 - 2¹⁵ = 528089033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 528121801.

It is not a weakly prime, because it can be changed into another prime (528122801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264060900 + 264060901.

It is an arithmetic number, because the mean of its divisors is an integer number (264060901).

Almost surely, 2^528121801 is an apocalyptic number.

It is an amenable number.

528121801 is a deficient number, since it is larger than the sum of its proper divisors (1).

528121801 is an equidigital number, since it uses as much as digits as its factorization.

528121801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 528121801 is about 22980.9007873930. The cubic root of 528121801 is about 808.3101492294.

The spelling of 528121801 in words is "five hundred twenty-eight million, one hundred twenty-one thousand, eight hundred one".