104643181 has 2 divisors, whose sum is σ = 104643182. Its totient is φ = 104643180.

The previous prime is 104643101. The next prime is 104643191. The reversal of 104643181 is 181346401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87254281 + 17388900 = 9341^2 + 4170^2 .

It is a cyclic number.

It is not a de Polignac number, because 104643181 - 2⁷ = 104643053 is a prime.

It is a super-2 number, since 2×104643181² = 21900390659597522, 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 (104643101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52321590 + 52321591.

It is an arithmetic number, because the mean of its divisors is an integer number (52321591).

Almost surely, 2^104643181 is an apocalyptic number.

It is an amenable number.

104643181 is a deficient number, since it is larger than the sum of its proper divisors (1).

104643181 is an equidigital number, since it uses as much as digits as its factorization.

104643181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 104643181 is about 10229.5249645328. The cubic root of 104643181 is about 471.2343906347.

Adding to 104643181 its reverse (181346401), we get a palindrome (285989582).

The spelling of 104643181 in words is "one hundred four million, six hundred forty-three thousand, one hundred eighty-one".