520002071 has 4 divisors (see below), whose sum is σ = 520118712. Its totient is φ = 519885432.

The previous prime is 520002059. The next prime is 520002073. The reversal of 520002071 is 170200025.

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 520002071 - 2¹⁰ = 520001047 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 (520002073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51356 + ... + 60641.

It is an arithmetic number, because the mean of its divisors is an integer number (130029678).

Almost surely, 2^520002071 is an apocalyptic number.

520002071 is a deficient number, since it is larger than the sum of its proper divisors (116641).

520002071 is a wasteful number, since it uses less digits than its factorization.

520002071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116640.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 520002071 is about 22803.5539116165. The cubic root of 520002071 is about 804.1462192706.

Adding to 520002071 its reverse (170200025), we get a palindrome (690202096).

The spelling of 520002071 in words is "five hundred twenty million, two thousand, seventy-one".