15315009 has 16 divisors (see below), whose sum is σ = 21027072. Its totient is φ = 9909648.

The previous prime is 15314989. The next prime is 15315029. The reversal of 15315009 is 90051351.

It is an interprime number because it is at equal distance from previous prime (15314989) and next prime (15315029).

It is not a de Polignac number, because 15315009 - 2¹⁶ = 15249473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15315009.

It is not an unprimeable number, because it can be changed into a prime (15315029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29022 + ... + 29544.

It is an arithmetic number, because the mean of its divisors is an integer number (1314192).

Almost surely, 2^15315009 is an apocalyptic number.

It is an amenable number.

15315009 is a deficient number, since it is larger than the sum of its proper divisors (5712063).

15315009 is a wasteful number, since it uses less digits than its factorization.

15315009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796.

The product of its (nonzero) digits is 675, while the sum is 24.

The square root of 15315009 is about 3913.4395357537. The cubic root of 15315009 is about 248.3356591327.

The spelling of 15315009 in words is "fifteen million, three hundred fifteen thousand, nine".