104304521 has 4 divisors (see below), whose sum is σ = 104333892. Its totient is φ = 104275152.

The previous prime is 104304493. The next prime is 104304581. The reversal of 104304521 is 125403401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78943225 + 25361296 = 8885^2 + 5036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104304521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104304493 and 104304502.

It is not an unprimeable number, because it can be changed into a prime (104304581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8486 + ... + 16751.

It is an arithmetic number, because the mean of its divisors is an integer number (26083473).

Almost surely, 2^104304521 is an apocalyptic number.

It is an amenable number.

104304521 is a deficient number, since it is larger than the sum of its proper divisors (29371).

104304521 is an equidigital number, since it uses as much as digits as its factorization.

104304521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29370.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 104304521 is about 10212.9584842004. The cubic root of 104304521 is about 470.7254843764.

Adding to 104304521 its reverse (125403401), we get a palindrome (229707922).

The spelling of 104304521 in words is "one hundred four million, three hundred four thousand, five hundred twenty-one".