52135513 has 4 divisors (see below), whose sum is σ = 52869888. Its totient is φ = 51401140.

The previous prime is 52135507. The next prime is 52135529. The reversal of 52135513 is 31553125.

52135513 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52135513 is a prime.

It is a super-2 number, since 2×52135513² = 5436223431546338, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (52135543) 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, 367081 + ... + 367222.

It is an arithmetic number, because the mean of its divisors is an integer number (13217472).

Almost surely, 2^52135513 is an apocalyptic number.

It is an amenable number.

52135513 is a deficient number, since it is larger than the sum of its proper divisors (734375).

52135513 is an equidigital number, since it uses as much as digits as its factorization.

52135513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734374.

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

The square root of 52135513 is about 7220.4925732252. The cubic root of 52135513 is about 373.5750676313.

Adding to 52135513 its reverse (31553125), we get a palindrome (83688638).

The spelling of 52135513 in words is "fifty-two million, one hundred thirty-five thousand, five hundred thirteen".