520434505 has 8 divisors (see below), whose sum is σ = 624652992. Its totient is φ = 416259888.

The previous prime is 520434469. The next prime is 520434527. The reversal of 520434505 is 505434025.

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 520434505 - 2¹⁵ = 520401737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27244 + ... + 42226.

It is an arithmetic number, because the mean of its divisors is an integer number (78081624).

Almost surely, 2^520434505 is an apocalyptic number.

It is an amenable number.

520434505 is a deficient number, since it is larger than the sum of its proper divisors (104218487).

520434505 is a wasteful number, since it uses less digits than its factorization.

520434505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21935.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 520434505 is about 22813.0336649907. The cubic root of 520434505 is about 804.3690669838.

The spelling of 520434505 in words is "five hundred twenty million, four hundred thirty-four thousand, five hundred five".