52320013 has 2 divisors, whose sum is σ = 52320014. Its totient is φ = 52320012.

The previous prime is 52320007. The next prime is 52320019. The reversal of 52320013 is 31002325.

It is a balanced prime because it is at equal distance from previous prime (52320007) and next prime (52320019).

It can be written as a sum of positive squares in only one way, i.e., 27688644 + 24631369 = 5262^2 + 4963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52320013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52320019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26160006 + 26160007.

It is an arithmetic number, because the mean of its divisors is an integer number (26160007).

Almost surely, 2^52320013 is an apocalyptic number.

It is an amenable number.

52320013 is a deficient number, since it is larger than the sum of its proper divisors (1).

52320013 is an equidigital number, since it uses as much as digits as its factorization.

52320013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 52320013 is about 7233.2574266370. The cubic root of 52320013 is about 374.0152247703.

Adding to 52320013 its reverse (31002325), we get a palindrome (83322338).

The spelling of 52320013 in words is "fifty-two million, three hundred twenty thousand, thirteen".