520411673 has 4 divisors (see below), whose sum is σ = 521407248. Its totient is φ = 519416100.

The previous prime is 520411651. The next prime is 520411711. The reversal of 520411673 is 376114025.

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 520411673 - 2¹⁶ = 520346137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520411613) 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, 497003 + ... + 498048.

It is an arithmetic number, because the mean of its divisors is an integer number (130351812).

Almost surely, 2^520411673 is an apocalyptic number.

It is an amenable number.

520411673 is a deficient number, since it is larger than the sum of its proper divisors (995575).

520411673 is an equidigital number, since it uses as much as digits as its factorization.

520411673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995574.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 520411673 is about 22812.5332438114. The cubic root of 520411673 is about 804.3573039775.

Adding to 520411673 its reverse (376114025), we get a palindrome (896525698).

The spelling of 520411673 in words is "five hundred twenty million, four hundred eleven thousand, six hundred seventy-three".