887552821 has 2 divisors, whose sum is σ = 887552822. Its totient is φ = 887552820.

The previous prime is 887552803. The next prime is 887552863. The reversal of 887552821 is 128255788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 739078596 + 148474225 = 27186^2 + 12185^2 .

It is a cyclic number.

It is not a de Polignac number, because 887552821 - 2²⁹ = 350681909 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (887552321) 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, 443776410 + 443776411.

It is an arithmetic number, because the mean of its divisors is an integer number (443776411).

Almost surely, 2^887552821 is an apocalyptic number.

It is an amenable number.

887552821 is a deficient number, since it is larger than the sum of its proper divisors (1).

887552821 is an equidigital number, since it uses as much as digits as its factorization.

887552821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 358400, while the sum is 46.

The square root of 887552821 is about 29791.8247343126. The cubic root of 887552821 is about 961.0177361399.

The spelling of 887552821 in words is "eight hundred eighty-seven million, five hundred fifty-two thousand, eight hundred twenty-one".