520210161 has 32 divisors (see below), whose sum is σ = 781516800. Its totient is φ = 341969040.

The previous prime is 520210153. The next prime is 520210169. The reversal of 520210161 is 161012025.

It is an interprime number because it is at equal distance from previous prime (520210153) and next prime (520210169).

It is not a de Polignac number, because 520210161 - 2³ = 520210153 is a prime.

It is a super-2 number, since 2×520210161² = 541237223215291842, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520210169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 723160 + ... + 723878.

It is an arithmetic number, because the mean of its divisors is an integer number (24422400).

Almost surely, 2^520210161 is an apocalyptic number.

It is an amenable number.

520210161 is a deficient number, since it is larger than the sum of its proper divisors (261306639).

520210161 is a wasteful number, since it uses less digits than its factorization.

520210161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 520210161 is about 22808.1161212407. The cubic root of 520210161 is about 804.2534704274.

Adding to 520210161 its reverse (161012025), we get a palindrome (681222186).

It can be divided in two parts, 520 and 210161, that added together give a square (210681 = 459²).

The spelling of 520210161 in words is "five hundred twenty million, two hundred ten thousand, one hundred sixty-one".