520620171 has 8 divisors (see below), whose sum is σ = 694310400. Its totient is φ = 347005032.

The previous prime is 520620161. The next prime is 520620181. The reversal of 520620171 is 171026025.

It is an interprime number because it is at equal distance from previous prime (520620161) and next prime (520620181).

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

It is not a de Polignac number, because 520620171 - 2⁷ = 520620043 is a prime.

It is a super-3 number, since 3×520620171³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (520620131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126 + ... + 32268.

It is an arithmetic number, because the mean of its divisors is an integer number (86788800).

Almost surely, 2^520620171 is an apocalyptic number.

520620171 is a deficient number, since it is larger than the sum of its proper divisors (173690229).

520620171 is a wasteful number, since it uses less digits than its factorization.

520620171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37545.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 520620171 is about 22817.1025987087. The cubic root of 520620171 is about 804.4647090096.

Adding to 520620171 its reverse (171026025), we get a palindrome (691646196).

The spelling of 520620171 in words is "five hundred twenty million, six hundred twenty thousand, one hundred seventy-one".