52115513 has 4 divisors (see below), whose sum is σ = 52377600. Its totient is φ = 51853428.

The previous prime is 52115507. The next prime is 52115519. The reversal of 52115513 is 31551125.

It is a happy number.

52115513 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 an interprime number because it is at equal distance from previous prime (52115507) and next prime (52115519).

It is a cyclic number.

It is not a de Polignac number, because 52115513 - 2⁶ = 52115449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52115519) 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, 130745 + ... + 131142.

It is an arithmetic number, because the mean of its divisors is an integer number (13094400).

Almost surely, 2^52115513 is an apocalyptic number.

It is an amenable number.

52115513 is a deficient number, since it is larger than the sum of its proper divisors (262087).

52115513 is a wasteful number, since it uses less digits than its factorization.

52115513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262086.

The product of its digits is 750, while the sum is 23.

The square root of 52115513 is about 7219.1074933125. The cubic root of 52115513 is about 373.5272917710.

Adding to 52115513 its reverse (31551125), we get a palindrome (83666638).

The spelling of 52115513 in words is "fifty-two million, one hundred fifteen thousand, five hundred thirteen".