517473213 has 4 divisors (see below), whose sum is σ = 689964288. Its totient is φ = 344982140.

The previous prime is 517473193. The next prime is 517473221. The reversal of 517473213 is 312374715.

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 517473213 - 2⁸ = 517472957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517473233) 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, 86245533 + ... + 86245538.

It is an arithmetic number, because the mean of its divisors is an integer number (172491072).

Almost surely, 2^517473213 is an apocalyptic number.

It is an amenable number.

517473213 is a deficient number, since it is larger than the sum of its proper divisors (172491075).

517473213 is a wasteful number, since it uses less digits than its factorization.

517473213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172491074.

The product of its digits is 17640, while the sum is 33.

The square root of 517473213 is about 22748.0375637109. The cubic root of 517473213 is about 802.8405340417.

It can be divided in two parts, 5174 and 73213, that added together give a palindrome (78387).

The spelling of 517473213 in words is "five hundred seventeen million, four hundred seventy-three thousand, two hundred thirteen".