520411566 has 8 divisors (see below), whose sum is σ = 1040823144. Its totient is φ = 173470520.

The previous prime is 520411561. The next prime is 520411597. The reversal of 520411566 is 665114025.

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

520411566 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520411561) 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, 43367625 + ... + 43367636.

It is an arithmetic number, because the mean of its divisors is an integer number (130102893).

Almost surely, 2^520411566 is an apocalyptic number.

520411566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520411566 is a wasteful number, since it uses less digits than its factorization.

520411566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86735266.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 520411566 is about 22812.5308986092. The cubic root of 520411566 is about 804.3572488504.

The spelling of 520411566 in words is "five hundred twenty million, four hundred eleven thousand, five hundred sixty-six".