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BaseRepresentation
bin11100110101000001
312222222101
4130311001
512234311
62310401
71001155
oct346501
9188871
10118081
1180797
1258401
1341992
1431065
1524ec1
hex1cd41

118081 has 2 divisors, whose sum is σ = 118082. Its totient is φ = 118080.

The previous prime is 118061. The next prime is 118093. The reversal of 118081 is 180811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99856 + 18225 = 316^2 + 135^2 .

It is an emirp because it is prime and its reverse (180811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118081 - 215 = 85313 is a prime.

It is a super-2 number, since 2×1180812 = 27886245122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (118051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59040 + 59041.

It is an arithmetic number, because the mean of its divisors is an integer number (59041).

2118081 is an apocalyptic number.

It is an amenable number.

118081 is a deficient number, since it is larger than the sum of its proper divisors (1).

118081 is an equidigital number, since it uses as much as digits as its factorization.

118081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 118081 is about 343.6291605787. The cubic root of 118081 is about 49.0599017516.

Adding to 118081 its reverse (180811), we get a palindrome (298892).

The spelling of 118081 in words is "one hundred eighteen thousand, eighty-one".