520712 has 8 divisors (see below), whose sum is σ = 976350. Its totient is φ = 260352.

The previous prime is 520703. The next prime is 520717. The reversal of 520712 is 217025.

It can be written as a sum of positive squares in only one way, i.e., 276676 + 244036 = 526^2 + 494^2 .

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

It is a super-2 number, since 2×520712² = 542281973888, which contains 22 as substring.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (520717) by changing a digit.

520712 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32537 + ... + 32552.

2⁵²⁰⁷¹² is an apocalyptic number.

It is an amenable number.

520712 is a deficient number, since it is larger than the sum of its proper divisors (455638).

520712 is a wasteful number, since it uses less digits than its factorization.

520712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65095 (or 65091 counting only the distinct ones).

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

The square root of 520712 is about 721.6037693915. The cubic root of 520712 is about 80.4512004428.

Adding to 520712 its reverse (217025), we get a palindrome (737737).

The spelling of 520712 in words is "five hundred twenty thousand, seven hundred twelve".