520229181 has 4 divisors (see below), whose sum is σ = 693638912. Its totient is φ = 346819452.

The previous prime is 520229159. The next prime is 520229209. The reversal of 520229181 is 181922025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 520229181 - 2¹³ = 520220989 is a prime.

It is a super-2 number, since 2×520229181² = 541276801527861522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520227181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86704861 + ... + 86704866.

It is an arithmetic number, because the mean of its divisors is an integer number (173409728).

Almost surely, 2^520229181 is an apocalyptic number.

It is an amenable number.

520229181 is a deficient number, since it is larger than the sum of its proper divisors (173409731).

520229181 is a wasteful number, since it uses less digits than its factorization.

520229181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173409730.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 520229181 is about 22808.5330742685. The cubic root of 520229181 is about 804.2632720523.

The spelling of 520229181 in words is "five hundred twenty million, two hundred twenty-nine thousand, one hundred eighty-one".