52581313 has 2 divisors, whose sum is σ = 52581314. Its totient is φ = 52581312.

The previous prime is 52581299. The next prime is 52581349. The reversal of 52581313 is 31318525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41770369 + 10810944 = 6463^2 + 3288^2 .

It is a cyclic number.

It is not a de Polignac number, because 52581313 - 2⁵ = 52581281 is a prime.

It is not a weakly prime, because it can be changed into another prime (52581383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26290656 + 26290657.

It is an arithmetic number, because the mean of its divisors is an integer number (26290657).

Almost surely, 2^52581313 is an apocalyptic number.

It is an amenable number.

52581313 is a deficient number, since it is larger than the sum of its proper divisors (1).

52581313 is an equidigital number, since it uses as much as digits as its factorization.

52581313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 28.

The square root of 52581313 is about 7251.2973322020. The cubic root of 52581313 is about 374.6368347800.

Adding to 52581313 its reverse (31318525), we get a palindrome (83899838).

The spelling of 52581313 in words is "fifty-two million, five hundred eighty-one thousand, three hundred thirteen".