8555995321 has 2 divisors, whose sum is σ = 8555995322. Its totient is φ = 8555995320.

The previous prime is 8555995277. The next prime is 8555995361. The reversal of 8555995321 is 1235995558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8401738921 + 154256400 = 91661^2 + 12420^2 .

It is a cyclic number.

It is not a de Polignac number, because 8555995321 - 2²⁵ = 8522440889 is a prime.

It is not a weakly prime, because it can be changed into another prime (8555995361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4277997660 + 4277997661.

It is an arithmetic number, because the mean of its divisors is an integer number (4277997661).

Almost surely, 2^8555995321 is an apocalyptic number.

It is an amenable number.

8555995321 is a deficient number, since it is larger than the sum of its proper divisors (1).

8555995321 is an equidigital number, since it uses as much as digits as its factorization.

8555995321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430000, while the sum is 52.

The square root of 8555995321 is about 92498.6233465126. The cubic root of 8555995321 is about 2045.2991889340.

The spelling of 8555995321 in words is "eight billion, five hundred fifty-five million, nine hundred ninety-five thousand, three hundred twenty-one".