52115533 has 4 divisors (see below), whose sum is σ = 52969948. Its totient is φ = 51261120.

The previous prime is 52115521. The next prime is 52115549. The reversal of 52115533 is 33551125.

52115533 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.

It can be written as a sum of positive squares in 2 ways, for example, as 3143529 + 48972004 = 1773^2 + 6998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52115533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52115498 and 52115507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52113533) 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, 427116 + ... + 427237.

It is an arithmetic number, because the mean of its divisors is an integer number (13242487).

Almost surely, 2^52115533 is an apocalyptic number.

It is an amenable number.

52115533 is a deficient number, since it is larger than the sum of its proper divisors (854415).

52115533 is an equidigital number, since it uses as much as digits as its factorization.

52115533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854414.

The product of its digits is 2250, while the sum is 25.

The square root of 52115533 is about 7219.1088785251. The cubic root of 52115533 is about 373.5273395530.

Adding to 52115533 its reverse (33551125), we get a palindrome (85666658).

The spelling of 52115533 in words is "fifty-two million, one hundred fifteen thousand, five hundred thirty-three".