520417613 has 4 divisors (see below), whose sum is σ = 520951260. Its totient is φ = 519883968.

The previous prime is 520417589. The next prime is 520417637. The reversal of 520417613 is 316714025.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (520417589) and next prime (520417637).

It can be written as a sum of positive squares in 2 ways, for example, as 245454889 + 274962724 = 15667^2 + 16582^2 .

It is a cyclic number.

It is not a de Polignac number, because 520417613 - 2⁸ = 520417357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520417013) 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, 265358 + ... + 267311.

It is an arithmetic number, because the mean of its divisors is an integer number (130237815).

Almost surely, 2^520417613 is an apocalyptic number.

It is an amenable number.

520417613 is a deficient number, since it is larger than the sum of its proper divisors (533647).

520417613 is an equidigital number, since it uses as much as digits as its factorization.

520417613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533646.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 520417613 is about 22812.6634350310. The cubic root of 520417613 is about 804.3603642881.

The spelling of 520417613 in words is "five hundred twenty million, four hundred seventeen thousand, six hundred thirteen".