52308013 has 4 divisors (see below), whose sum is σ = 52323040. Its totient is φ = 52292988.

The previous prime is 52307999. The next prime is 52308017. The reversal of 52308013 is 31080325.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 52308013 - 2⁹ = 52307501 is a prime.

It is a super-2 number, since 2×52308013² = 5472256448016338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52308017) 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, 706 + ... + 10252.

It is an arithmetic number, because the mean of its divisors is an integer number (13080760).

Almost surely, 2^52308013 is an apocalyptic number.

It is an amenable number.

52308013 is a deficient number, since it is larger than the sum of its proper divisors (15027).

52308013 is an equidigital number, since it uses as much as digits as its factorization.

52308013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15026.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 52308013 is about 7232.4278772761. The cubic root of 52308013 is about 373.9866281549.

Adding to 52308013 its reverse (31080325), we get a palindrome (83388338).

The spelling of 52308013 in words is "fifty-two million, three hundred eight thousand, thirteen".