520531 has 8 divisors (see below), whose sum is σ = 576000. Its totient is φ = 466440.

The previous prime is 520529. The next prime is 520547. The reversal of 520531 is 135025.

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

It is a cyclic number.

It is not a de Polignac number, because 520531 - 2¹ = 520529 is a prime.

It is a super-2 number, since 2×520531² = 541905043922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520571) 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, 570 + ... + 1168.

It is an arithmetic number, because the mean of its divisors is an integer number (72000).

2⁵²⁰⁵³¹ is an apocalyptic number.

520531 is a deficient number, since it is larger than the sum of its proper divisors (55469).

520531 is a wasteful number, since it uses less digits than its factorization.

520531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 520531 is about 721.4783434033. The cubic root of 520531 is about 80.4418777239.

Adding to 520531 its reverse (135025), we get a palindrome (655556).

The spelling of 520531 in words is "five hundred twenty thousand, five hundred thirty-one".