2021528287 has 2 divisors, whose sum is σ = 2021528288. Its totient is φ = 2021528286.

The previous prime is 2021528281. The next prime is 2021528339. The reversal of 2021528287 is 7828251202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021528287 - 2²³ = 2013139679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021528281) 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, 1010764143 + 1010764144.

It is an arithmetic number, because the mean of its divisors is an integer number (1010764144).

Almost surely, 2^2021528287 is an apocalyptic number.

2021528287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021528287 is an equidigital number, since it uses as much as digits as its factorization.

2021528287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 2021528287 is about 44961.4088636021. The cubic root of 2021528287 is about 1264.4255828629.

Adding to 2021528287 its reverse (7828251202), we get a palindrome (9849779489).

The spelling of 2021528287 in words is "two billion, twenty-one million, five hundred twenty-eight thousand, two hundred eighty-seven".