520364161 has 4 divisors (see below), whose sum is σ = 520970800. Its totient is φ = 519757524.

The previous prime is 520364149. The next prime is 520364227. The reversal of 520364161 is 161463025.

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 a cyclic number.

It is not a de Polignac number, because 520364161 - 2¹¹ = 520362113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520361161) 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, 302031 + ... + 303748.

It is an arithmetic number, because the mean of its divisors is an integer number (130242700).

Almost surely, 2^520364161 is an apocalyptic number.

It is an amenable number.

520364161 is a deficient number, since it is larger than the sum of its proper divisors (606639).

520364161 is an equidigital number, since it uses as much as digits as its factorization.

520364161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606638.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 520364161 is about 22811.4918626555. The cubic root of 520364161 is about 804.3328247755.

The spelling of 520364161 in words is "five hundred twenty million, three hundred sixty-four thousand, one hundred sixty-one".