89020181 has 2 divisors, whose sum is σ = 89020182. Its totient is φ = 89020180.

The previous prime is 89020147. The next prime is 89020193. The reversal of 89020181 is 18102098.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46117681 + 42902500 = 6791^2 + 6550^2 .

It is a cyclic number.

It is not a de Polignac number, because 89020181 - 2¹⁴ = 89003797 is a prime.

It is a super-2 number, since 2×89020181² = 15849185250545522, 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 (89020121) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44510090 + 44510091.

It is an arithmetic number, because the mean of its divisors is an integer number (44510091).

Almost surely, 2^89020181 is an apocalyptic number.

It is an amenable number.

89020181 is a deficient number, since it is larger than the sum of its proper divisors (1).

89020181 is an equidigital number, since it uses as much as digits as its factorization.

89020181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 89020181 is about 9435.0506622911. The cubic root of 89020181 is about 446.5082534578.

The spelling of 89020181 in words is "eighty-nine million, twenty thousand, one hundred eighty-one".