52003613 has 4 divisors (see below), whose sum is σ = 52024128. Its totient is φ = 51983100.

The previous prime is 52003597. The next prime is 52003619. The reversal of 52003613 is 31630025.

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 not a de Polignac number, because 52003613 - 2⁴ = 52003597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52003619) 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, 5813 + ... + 11738.

It is an arithmetic number, because the mean of its divisors is an integer number (13006032).

Almost surely, 2^52003613 is an apocalyptic number.

It is an amenable number.

52003613 is a deficient number, since it is larger than the sum of its proper divisors (20515).

52003613 is a wasteful number, since it uses less digits than its factorization.

52003613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20514.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 52003613 is about 7211.3530630527. The cubic root of 52003613 is about 373.2597600731.

Adding to 52003613 its reverse (31630025), we get a palindrome (83633638).

The spelling of 52003613 in words is "fifty-two million, three thousand, six hundred thirteen".