8527622821 has 2 divisors, whose sum is σ = 8527622822. Its totient is φ = 8527622820.

The previous prime is 8527622819. The next prime is 8527622827. The reversal of 8527622821 is 1282267258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6510714721 + 2016908100 = 80689^2 + 44910^2 .

It is a cyclic number.

It is not a de Polignac number, because 8527622821 - 2¹ = 8527622819 is a prime.

Together with 8527622819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8527622827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4263811410 + 4263811411.

It is an arithmetic number, because the mean of its divisors is an integer number (4263811411).

Almost surely, 2^8527622821 is an apocalyptic number.

It is an amenable number.

8527622821 is a deficient number, since it is larger than the sum of its proper divisors (1).

8527622821 is an equidigital number, since it uses as much as digits as its factorization.

8527622821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The square root of 8527622821 is about 92345.1288428361. The cubic root of 8527622821 is about 2043.0358826356.

The spelling of 8527622821 in words is "eight billion, five hundred twenty-seven million, six hundred twenty-two thousand, eight hundred twenty-one".