104069521 has 4 divisors (see below), whose sum is σ = 106607844. Its totient is φ = 101531200.

The previous prime is 104069513. The next prime is 104069527. The reversal of 104069521 is 125960401.

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 22420225 + 81649296 = 4735^2 + 9036^2 .

It is a cyclic number.

It is not a de Polignac number, because 104069521 - 2³ = 104069513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104069521.

It is not an unprimeable number, because it can be changed into a prime (104069527) 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, 1269100 + ... + 1269181.

It is an arithmetic number, because the mean of its divisors is an integer number (26651961).

Almost surely, 2^104069521 is an apocalyptic number.

It is an amenable number.

104069521 is a deficient number, since it is larger than the sum of its proper divisors (2538323).

104069521 is an equidigital number, since it uses as much as digits as its factorization.

104069521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538322.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 104069521 is about 10201.4470052047. The cubic root of 104069521 is about 470.3717008313.

The spelling of 104069521 in words is "one hundred four million, sixty-nine thousand, five hundred twenty-one".