104518621 has 2 divisors, whose sum is σ = 104518622. Its totient is φ = 104518620.

The previous prime is 104518607. The next prime is 104518633. The reversal of 104518621 is 126815401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80371225 + 24147396 = 8965^2 + 4914^2 .

It is a cyclic number.

It is not a de Polignac number, because 104518621 - 2⁷ = 104518493 is a prime.

It is a super-3 number, since 3×104518621³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 104518621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104518121) 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, 52259310 + 52259311.

It is an arithmetic number, because the mean of its divisors is an integer number (52259311).

Almost surely, 2^104518621 is an apocalyptic number.

It is an amenable number.

104518621 is a deficient number, since it is larger than the sum of its proper divisors (1).

104518621 is an equidigital number, since it uses as much as digits as its factorization.

104518621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 104518621 is about 10223.4348924420. The cubic root of 104518621 is about 471.0473414639.

The spelling of 104518621 in words is "one hundred four million, five hundred eighteen thousand, six hundred twenty-one".