520070217 has 4 divisors (see below), whose sum is σ = 693426960. Its totient is φ = 346713476.

The previous prime is 520070209. The next prime is 520070219. The reversal of 520070217 is 712070025.

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 520070217 - 2³ = 520070209 is a prime.

It is a super-2 number, since 2×520070217² = 540946061220854178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520070219) 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, 86678367 + ... + 86678372.

It is an arithmetic number, because the mean of its divisors is an integer number (173356740).

Almost surely, 2^520070217 is an apocalyptic number.

It is an amenable number.

520070217 is a deficient number, since it is larger than the sum of its proper divisors (173356743).

520070217 is a wasteful number, since it uses less digits than its factorization.

520070217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173356742.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 520070217 is about 22805.0480595854. The cubic root of 520070217 is about 804.1813453837.

The spelling of 520070217 in words is "five hundred twenty million, seventy thousand, two hundred seventeen".