8554332181 has 2 divisors, whose sum is σ = 8554332182. Its totient is φ = 8554332180.

The previous prime is 8554332173. The next prime is 8554332223. The reversal of 8554332181 is 1812334558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7397720100 + 1156612081 = 86010^2 + 34009^2 .

It is a cyclic number.

It is not a de Polignac number, because 8554332181 - 2³ = 8554332173 is a prime.

It is a super-2 number, since 2×8554332181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8554332131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4277166090 + 4277166091.

It is an arithmetic number, because the mean of its divisors is an integer number (4277166091).

Almost surely, 2^8554332181 is an apocalyptic number.

It is an amenable number.

8554332181 is a deficient number, since it is larger than the sum of its proper divisors (1).

8554332181 is an equidigital number, since it uses as much as digits as its factorization.

8554332181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 40.

The square root of 8554332181 is about 92489.6328298475. The cubic root of 8554332181 is about 2045.1666565519.

The spelling of 8554332181 in words is "eight billion, five hundred fifty-four million, three hundred thirty-two thousand, one hundred eighty-one".