89167181 has 2 divisors, whose sum is σ = 89167182. Its totient is φ = 89167180.

The previous prime is 89167139. The next prime is 89167187. The reversal of 89167181 is 18176198.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79370281 + 9796900 = 8909^2 + 3130^2 .

It is a cyclic number.

It is not a de Polignac number, because 89167181 - 2²⁶ = 22058317 is a prime.

It is a super-2 number, since 2×89167181² = 15901572334973522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89167187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44583590 + 44583591.

It is an arithmetic number, because the mean of its divisors is an integer number (44583591).

Almost surely, 2^89167181 is an apocalyptic number.

It is an amenable number.

89167181 is a deficient number, since it is larger than the sum of its proper divisors (1).

89167181 is an equidigital number, since it uses as much as digits as its factorization.

89167181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 41.

The square root of 89167181 is about 9442.8375502282. The cubic root of 89167181 is about 446.7538929550.

The spelling of 89167181 in words is "eighty-nine million, one hundred sixty-seven thousand, one hundred eighty-one".