520000071 has 8 divisors (see below), whose sum is σ = 693438960. Its totient is φ = 346613952.

The previous prime is 520000069. The next prime is 520000079. The reversal of 520000071 is 170000025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520000071 - 2¹ = 520000069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520000071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520000079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30115 + ... + 44123.

It is an arithmetic number, because the mean of its divisors is an integer number (86679870).

Almost surely, 2^520000071 is an apocalyptic number.

520000071 is a deficient number, since it is larger than the sum of its proper divisors (173438889).

520000071 is a wasteful number, since it uses less digits than its factorization.

520000071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26385.

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 520000071 is about 22803.5100587607. The cubic root of 520000071 is about 804.1451883167.

Adding to 520000071 its reverse (170000025), we get a palindrome (690000096).

The spelling of 520000071 in words is "five hundred twenty million, seventy-one", and thus it is an aban number.