52317687 has 32 divisors (see below), whose sum is σ = 76495104. Its totient is φ = 31680000.

The previous prime is 52317647. The next prime is 52317689. The reversal of 52317687 is 78671325.

It is not a de Polignac number, because 52317687 - 2⁶ = 52317623 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52317689) 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 31 ways as a sum of consecutive naturals, for example, 208312 + ... + 208562.

It is an arithmetic number, because the mean of its divisors is an integer number (2390472).

Almost surely, 2^52317687 is an apocalyptic number.

52317687 is a deficient number, since it is larger than the sum of its proper divisors (24177417).

52317687 is a wasteful number, since it uses less digits than its factorization.

52317687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399.

The product of its digits is 70560, while the sum is 39.

The square root of 52317687 is about 7233.0966397526. The cubic root of 52317687 is about 374.0096821347.

The spelling of 52317687 in words is "fifty-two million, three hundred seventeen thousand, six hundred eighty-seven".