104519581 has 2 divisors, whose sum is σ = 104519582. Its totient is φ = 104519580.

The previous prime is 104519557. The next prime is 104519609. The reversal of 104519581 is 185915401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96707556 + 7812025 = 9834^2 + 2795^2 .

It is a cyclic number.

It is not a de Polignac number, because 104519581 - 2⁵ = 104519549 is a prime.

It is a super-2 number, since 2×104519581² = 21848685624831122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108519581) 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, 52259790 + 52259791.

It is an arithmetic number, because the mean of its divisors is an integer number (52259791).

Almost surely, 2^104519581 is an apocalyptic number.

It is an amenable number.

104519581 is a deficient number, since it is larger than the sum of its proper divisors (1).

104519581 is an equidigital number, since it uses as much as digits as its factorization.

104519581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 34.

The square root of 104519581 is about 10223.4818432861. The cubic root of 104519581 is about 471.0487836441.

The spelling of 104519581 in words is "one hundred four million, five hundred nineteen thousand, five hundred eighty-one".