89330581 has 2 divisors, whose sum is σ = 89330582. Its totient is φ = 89330580.

The previous prime is 89330573. The next prime is 89330587. The reversal of 89330581 is 18503398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81540900 + 7789681 = 9030^2 + 2791^2 .

It is a cyclic number.

It is not a de Polignac number, because 89330581 - 2³ = 89330573 is a prime.

It is a super-2 number, since 2×89330581² = 15959905403595122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89330581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89330587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44665290 + 44665291.

It is an arithmetic number, because the mean of its divisors is an integer number (44665291).

Almost surely, 2^89330581 is an apocalyptic number.

It is an amenable number.

89330581 is a deficient number, since it is larger than the sum of its proper divisors (1).

89330581 is an equidigital number, since it uses as much as digits as its factorization.

89330581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 89330581 is about 9451.4856504150. The cubic root of 89330581 is about 447.0266205054.

The spelling of 89330581 in words is "eighty-nine million, three hundred thirty thousand, five hundred eighty-one".