52517321 has 4 divisors (see below), whose sum is σ = 52618644. Its totient is φ = 52416000.

The previous prime is 52517293. The next prime is 52517323. The reversal of 52517321 is 12371525.

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 4145296 + 48372025 = 2036^2 + 6955^2 .

It is a cyclic number.

It is not a de Polignac number, because 52517321 - 2¹⁰ = 52516297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52517323) 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, 49880 + ... + 50921.

It is an arithmetic number, because the mean of its divisors is an integer number (13154661).

Almost surely, 2^52517321 is an apocalyptic number.

It is an amenable number.

52517321 is a deficient number, since it is larger than the sum of its proper divisors (101323).

52517321 is a wasteful number, since it uses less digits than its factorization.

52517321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101322.

The product of its digits is 2100, while the sum is 26.

The square root of 52517321 is about 7246.8835370799. The cubic root of 52517321 is about 374.4847941215.

Adding to 52517321 its reverse (12371525), we get a palindrome (64888846).

The spelling of 52517321 in words is "fifty-two million, five hundred seventeen thousand, three hundred twenty-one".