113550181 has 2 divisors, whose sum is σ = 113550182. Its totient is φ = 113550180.

The previous prime is 113550163. The next prime is 113550223. The reversal of 113550181 is 181055311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111197025 + 2353156 = 10545^2 + 1534^2 .

It is an emirp because it is prime and its reverse (181055311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113550181 - 2¹⁵ = 113517413 is a prime.

It is a super-2 number, since 2×113550181² = 25787287210265522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113550131) 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, 56775090 + 56775091.

It is an arithmetic number, because the mean of its divisors is an integer number (56775091).

Almost surely, 2^113550181 is an apocalyptic number.

It is an amenable number.

113550181 is a deficient number, since it is larger than the sum of its proper divisors (1).

113550181 is an equidigital number, since it uses as much as digits as its factorization.

113550181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 25.

The square root of 113550181 is about 10655.9927270996. The cubic root of 113550181 is about 484.2421735606.

The spelling of 113550181 in words is "one hundred thirteen million, five hundred fifty thousand, one hundred eighty-one".