520616071 has 4 divisors (see below), whose sum is σ = 527747872. Its totient is φ = 513484272.

The previous prime is 520616069. The next prime is 520616087. The reversal of 520616071 is 170616025.

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

It is a cyclic number.

It is not a de Polignac number, because 520616071 - 2¹ = 520616069 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 (520616051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3565791 + ... + 3565936.

It is an arithmetic number, because the mean of its divisors is an integer number (131936968).

Almost surely, 2^520616071 is an apocalyptic number.

520616071 is a deficient number, since it is larger than the sum of its proper divisors (7131801).

520616071 is an equidigital number, since it uses as much as digits as its factorization.

520616071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131800.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 520616071 is about 22817.0127536450. The cubic root of 520616071 is about 804.4625972244.

The spelling of 520616071 in words is "five hundred twenty million, six hundred sixteen thousand, seventy-one".