520027409 has 8 divisors (see below), whose sum is σ = 568276128. Its totient is φ = 471940960.

The previous prime is 520027393. The next prime is 520027439. The reversal of 520027409 is 904720025.

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

It is a cyclic number.

It is not a de Polignac number, because 520027409 - 2⁴ = 520027393 is a prime.

It is a super-2 number, since 2×520027409² = 540857012222506562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520027439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33812 + ... + 46725.

It is an arithmetic number, because the mean of its divisors is an integer number (71034516).

Almost surely, 2^520027409 is an apocalyptic number.

It is an amenable number.

520027409 is a deficient number, since it is larger than the sum of its proper divisors (48248719).

520027409 is a wasteful number, since it uses less digits than its factorization.

520027409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81135.

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

The square root of 520027409 is about 22804.1094761449. The cubic root of 520027409 is about 804.1592801968.

The spelling of 520027409 in words is "five hundred twenty million, twenty-seven thousand, four hundred nine".