520216 has 8 divisors (see below), whose sum is σ = 975420. Its totient is φ = 260104.

The previous prime is 520213. The next prime is 520241. The reversal of 520216 is 612025.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 15.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 520216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32506 + ... + 32521.

2⁵²⁰²¹⁶ is an apocalyptic number.

It is an amenable number.

520216 is a deficient number, since it is larger than the sum of its proper divisors (455204).

520216 is a wasteful number, since it uses less digits than its factorization.

520216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65033 (or 65029 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 520216 is about 721.2600085961. The cubic root of 520216 is about 80.4256479479.

Subtracting 520216 from its reverse (612025), we obtain a square (91809 = 303²).

The spelling of 520216 in words is "five hundred twenty thousand, two hundred sixteen".