104520181 has 2 divisors, whose sum is σ = 104520182. Its totient is φ = 104520180.

The previous prime is 104520167. The next prime is 104520191. The reversal of 104520181 is 181025401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64400625 + 40119556 = 8025^2 + 6334^2 .

It is a cyclic number.

It is not a de Polignac number, because 104520181 - 2⁹ = 104519669 is a prime.

It is a super-2 number, since 2×104520181² = 21848936472545522, 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 (104520161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52260090 + 52260091.

It is an arithmetic number, because the mean of its divisors is an integer number (52260091).

Almost surely, 2^104520181 is an apocalyptic number.

It is an amenable number.

104520181 is a deficient number, since it is larger than the sum of its proper divisors (1).

104520181 is an equidigital number, since it uses as much as digits as its factorization.

104520181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 104520181 is about 10223.5111874541. The cubic root of 104520181 is about 471.0496850022.

Adding to 104520181 its reverse (181025401), we get a palindrome (285545582).

The spelling of 104520181 in words is "one hundred four million, five hundred twenty thousand, one hundred eighty-one".