52113513 has 4 divisors (see below), whose sum is σ = 69484688. Its totient is φ = 34742340.

The previous prime is 52113491. The next prime is 52113527. The reversal of 52113513 is 31531125.

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 de Polignac number, because none of the positive numbers 2^k-52113513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52113513.

It is not an unprimeable number, because it can be changed into a prime (52113533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8685583 + ... + 8685588.

It is an arithmetic number, because the mean of its divisors is an integer number (17371172).

Almost surely, 2^52113513 is an apocalyptic number.

It is an amenable number.

52113513 is a deficient number, since it is larger than the sum of its proper divisors (17371175).

52113513 is a wasteful number, since it uses less digits than its factorization.

52113513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17371174.

The product of its digits is 450, while the sum is 21.

The square root of 52113513 is about 7218.9689707049. The cubic root of 52113513 is about 373.5225135128.

Adding to 52113513 its reverse (31531125), we get a palindrome (83644638).

The spelling of 52113513 in words is "fifty-two million, one hundred thirteen thousand, five hundred thirteen".