87002055522 has 54 divisors (see below), whose sum is σ = 193840024833. Its totient is φ = 28201865904.

The previous prime is 87002055521. The next prime is 87002055523. The reversal of 87002055522 is 22555020078.

87002055522 is a `hidden beast` number, since 87 + 0 + 0 + 2 + 0 + 55 + 522 = 666.

It is an interprime number because it is at equal distance from previous prime (87002055521) and next prime (87002055523).

It can be written as a sum of positive squares in 2 ways, for example, as 70192673721 + 16809381801 = 264939^2 + 129651^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=208569.

It is not an unprimeable number, because it can be changed into a prime (87002055521) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 46301379 + ... + 46303257.

Almost surely, 2^87002055522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87002055522

87002055522 is an abundant number, since it is smaller than the sum of its proper divisors (106837969311).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87002055522 is an equidigital number, since it uses as much as digits as its factorization.

87002055522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840 (or 1921 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The spelling of 87002055522 in words is "eighty-seven billion, two million, fifty-five thousand, five hundred twenty-two".