52017321 has 4 divisors (see below), whose sum is σ = 69356432. Its totient is φ = 34678212.

The previous prime is 52017311. The next prime is 52017347. The reversal of 52017321 is 12371025.

52017321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 52017321 - 2⁵ = 52017289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52017311) 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, 8669551 + ... + 8669556.

It is an arithmetic number, because the mean of its divisors is an integer number (17339108).

Almost surely, 2^52017321 is an apocalyptic number.

It is an amenable number.

52017321 is a deficient number, since it is larger than the sum of its proper divisors (17339111).

52017321 is a wasteful number, since it uses less digits than its factorization.

52017321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17339110.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 52017321 is about 7212.3034461953. The cubic root of 52017321 is about 373.2925539181.

Adding to 52017321 its reverse (12371025), we get a palindrome (64388346).

The spelling of 52017321 in words is "fifty-two million, seventeen thousand, three hundred twenty-one".