52409317 has 4 divisors (see below), whose sum is σ = 55492236. Its totient is φ = 49326400.

The previous prime is 52409297. The next prime is 52409327. The reversal of 52409317 is 71390425.

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 47251876 + 5157441 = 6874^2 + 2271^2 .

It is a cyclic number.

It is not a de Polignac number, because 52409317 - 2¹¹ = 52407269 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52409327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1541434 + ... + 1541467.

It is an arithmetic number, because the mean of its divisors is an integer number (13873059).

Almost surely, 2^52409317 is an apocalyptic number.

It is an amenable number.

52409317 is a deficient number, since it is larger than the sum of its proper divisors (3082919).

52409317 is a wasteful number, since it uses less digits than its factorization.

52409317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082918.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 52409317 is about 7239.4279470135. The cubic root of 52409317 is about 374.2279035514.

The spelling of 52409317 in words is "fifty-two million, four hundred nine thousand, three hundred seventeen".