520217373 has 16 divisors (see below), whose sum is σ = 767169536. Its totient is φ = 311480640.

The previous prime is 520217353. The next prime is 520217387. The reversal of 520217373 is 373712025.

It is not a de Polignac number, because 520217373 - 2¹⁰ = 520216349 is a prime.

It is a super-2 number, since 2×520217373² = 541252230342042258, which contains 22 as substring.

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 520217373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520217303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178813 + ... + 181698.

It is an arithmetic number, because the mean of its divisors is an integer number (47948096).

Almost surely, 2^520217373 is an apocalyptic number.

It is an amenable number.

520217373 is a deficient number, since it is larger than the sum of its proper divisors (246952163).

520217373 is a wasteful number, since it uses less digits than its factorization.

520217373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360564.

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 520217373 is about 22808.2742223080. The cubic root of 520217373 is about 804.2571870338.

Adding to 520217373 its reverse (373712025), we get a palindrome (893929398).

The spelling of 520217373 in words is "five hundred twenty million, two hundred seventeen thousand, three hundred seventy-three".