98181 has 6 divisors (see below), whose sum is σ = 141830. Its totient is φ = 65448.

The previous prime is 98179. The next prime is 98207. The reversal of 98181 is 18189.

It can be written as a sum of positive squares in only one way, i.e., 72900 + 25281 = 270^2 + 159^2 .

It is not a de Polignac number, because 98181 - 2¹ = 98179 is a prime.

It is a super-2 number, since 2×98181² = 19279017522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

98181 is a modest number, since divided by 8181 gives 9 as remainder.

It is a plaindrome in base 12 and base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 98181.

It is not an unprimeable number, because it can be changed into a prime (98101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5446 + ... + 5463.

2⁹⁸¹⁸¹ is an apocalyptic number.

It is an amenable number.

98181 is a deficient number, since it is larger than the sum of its proper divisors (43649).

98181 is a wasteful number, since it uses less digits than its factorization.

98181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10915 (or 10912 counting only the distinct ones).

The product of its digits is 576, while the sum is 27.

The square root of 98181 is about 313.3384751351. The cubic root of 98181 is about 46.1327294425.

The spelling of 98181 in words is "ninety-eight thousand, one hundred eighty-one".