104405521 has 8 divisors (see below), whose sum is σ = 114156000. Its totient is φ = 94698240.

The previous prime is 104405519. The next prime is 104405537. The reversal of 104405521 is 125504401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 104405521 - 2¹ = 104405519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104405492 and 104405501.

It is not an unprimeable number, because it can be changed into a prime (104405501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5631 + ... + 15508.

It is an arithmetic number, because the mean of its divisors is an integer number (14269500).

Almost surely, 2^104405521 is an apocalyptic number.

104405521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

104405521 is a deficient number, since it is larger than the sum of its proper divisors (9750479).

104405521 is a wasteful number, since it uses less digits than its factorization.

104405521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21599.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 104405521 is about 10217.9019862201. The cubic root of 104405521 is about 470.8773727639.

Adding to 104405521 its reverse (125504401), we get a palindrome (229909922).

The spelling of 104405521 in words is "one hundred four million, four hundred five thousand, five hundred twenty-one".