520095709 has 4 divisors (see below), whose sum is σ = 594395104. Its totient is φ = 445796316.

The previous prime is 520095689. The next prime is 520095767. The reversal of 520095709 is 907590025.

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 not a de Polignac number, because 520095709 - 2⁵ = 520095677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520095769) 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, 37149687 + ... + 37149700.

It is an arithmetic number, because the mean of its divisors is an integer number (148598776).

Almost surely, 2^520095709 is an apocalyptic number.

It is an amenable number.

520095709 is a deficient number, since it is larger than the sum of its proper divisors (74299395).

520095709 is an equidigital number, since it uses as much as digits as its factorization.

520095709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74299394.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 520095709 is about 22805.6069640779. The cubic root of 520095709 is about 804.1944845428.

The spelling of 520095709 in words is "five hundred twenty million, ninety-five thousand, seven hundred nine".