104305521 has 4 divisors (see below), whose sum is σ = 139074032. Its totient is φ = 69537012.

The previous prime is 104305507. The next prime is 104305541. The reversal of 104305521 is 125503401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 104305521 - 2⁹ = 104305009 is a prime.

It is a super-2 number, since 2×104305521² = 21759283422162882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104305541) 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, 17384251 + ... + 17384256.

It is an arithmetic number, because the mean of its divisors is an integer number (34768508).

Almost surely, 2^104305521 is an apocalyptic number.

It is an amenable number.

104305521 is a deficient number, since it is larger than the sum of its proper divisors (34768511).

104305521 is an equidigital number, since it uses as much as digits as its factorization.

104305521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34768510.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 104305521 is about 10213.0074414934. The cubic root of 104305521 is about 470.7269887024.

Adding to 104305521 its reverse (125503401), we get a palindrome (229808922).

It can be divided in two parts, 10430 and 5521, that added together give a palindrome (15951).

The spelling of 104305521 in words is "one hundred four million, three hundred five thousand, five hundred twenty-one".