15104609 has 4 divisors (see below), whose sum is σ = 16266516. Its totient is φ = 13942704.

The previous prime is 15104603. The next prime is 15104627. The reversal of 15104609 is 90640151.

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 1392400 + 13712209 = 1180^2 + 3703^2 .

It is a cyclic number.

It is not a de Polignac number, because 15104609 - 2²⁰ = 14056033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15104603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580934 + ... + 580959.

It is an arithmetic number, because the mean of its divisors is an integer number (4066629).

Almost surely, 2^15104609 is an apocalyptic number.

It is an amenable number.

15104609 is a deficient number, since it is larger than the sum of its proper divisors (1161907).

15104609 is a wasteful number, since it uses less digits than its factorization.

15104609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161906.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 15104609 is about 3886.4648461037. The cubic root of 15104609 is about 247.1931864584.

The spelling of 15104609 in words is "fifteen million, one hundred four thousand, six hundred nine".