104105521 has 12 divisors (see below), whose sum is σ = 117635328. Its totient is φ = 91915824.

The previous prime is 104105509. The next prime is 104105527. The reversal of 104105521 is 125501401.

It is not a de Polignac number, because 104105521 - 2¹⁷ = 103974449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104105527) 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 11 ways as a sum of consecutive naturals, for example, 9505 + ... + 17278.

It is an arithmetic number, because the mean of its divisors is an integer number (9802944).

Almost surely, 2^104105521 is an apocalyptic number.

It is an amenable number.

104105521 is a deficient number, since it is larger than the sum of its proper divisors (13529807).

104105521 is a wasteful number, since it uses less digits than its factorization.

104105521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26832 (or 26819 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 104105521 is about 10203.2113082108. The cubic root of 104105521 is about 470.4259319802.

Adding to 104105521 its reverse (125501401), we get a palindrome (229606922).

It can be divided in two parts, 10410 and 5521, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 104105521 in words is "one hundred four million, one hundred five thousand, five hundred twenty-one".