520023005 has 4 divisors (see below), whose sum is σ = 624027612. Its totient is φ = 416018400.

The previous prime is 520022969. The next prime is 520023017. The reversal of 520023005 is 500320025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 325225156 + 194797849 = 18034^2 + 13957^2 .

It is not a de Polignac number, because 520023005 - 2⁸ = 520022749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52002296 + ... + 52002305.

It is an arithmetic number, because the mean of its divisors is an integer number (156006903).

Almost surely, 2^520023005 is an apocalyptic number.

It is an amenable number.

520023005 is a deficient number, since it is larger than the sum of its proper divisors (104004607).

520023005 is a wasteful number, since it uses less digits than its factorization.

520023005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104004606.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 520023005 is about 22804.0129143973. The cubic root of 520023005 is about 804.1570101065.

The spelling of 520023005 in words is "five hundred twenty million, twenty-three thousand, five".