52319009 has 4 divisors (see below), whose sum is σ = 52343700. Its totient is φ = 52294320.

The previous prime is 52318991. The next prime is 52319011. The reversal of 52319009 is 90091325.

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 20430400 + 31888609 = 4520^2 + 5647^2 .

It is a cyclic number.

It is not a de Polignac number, because 52319009 - 2⁸ = 52318753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52319039) 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, 8834 + ... + 13515.

It is an arithmetic number, because the mean of its divisors is an integer number (13085925).

Almost surely, 2^52319009 is an apocalyptic number.

It is an amenable number.

52319009 is a deficient number, since it is larger than the sum of its proper divisors (24691).

52319009 is a wasteful number, since it uses less digits than its factorization.

52319009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24690.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 52319009 is about 7233.1880246541. The cubic root of 52319009 is about 374.0128323545.

The spelling of 52319009 in words is "fifty-two million, three hundred nineteen thousand, nine".