520620113 has 8 divisors (see below), whose sum is σ = 571247208. Its totient is φ = 471504384.

The previous prime is 520620109. The next prime is 520620119. The reversal of 520620113 is 311026025.

It can be written as a sum of positive squares in 4 ways, for example, as 4624 + 520615489 = 68^2 + 22817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520620113 - 2² = 520620109 is a prime.

It is a super-3 number, since 3×520620113³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520620119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377120 + ... + 378497.

It is an arithmetic number, because the mean of its divisors is an integer number (71405901).

Almost surely, 2^520620113 is an apocalyptic number.

520620113 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

520620113 is a deficient number, since it is larger than the sum of its proper divisors (50627095).

520620113 is a wasteful number, since it uses less digits than its factorization.

520620113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755683.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 520620113 is about 22817.1013277322. The cubic root of 520620113 is about 804.4646791357.

Adding to 520620113 its reverse (311026025), we get a palindrome (831646138).

The spelling of 520620113 in words is "five hundred twenty million, six hundred twenty thousand, one hundred thirteen".