520247 has 8 divisors (see below), whose sum is σ = 640416. Its totient is φ = 411552.

The previous prime is 520241. The next prime is 520279. The reversal of 520247 is 742025.

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 520247 - 2¹² = 516151 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520247.

It is not an unprimeable number, because it can be changed into a prime (520241) 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, 2768 + ... + 2949.

It is an arithmetic number, because the mean of its divisors is an integer number (80052).

2⁵²⁰²⁴⁷ is an apocalyptic number.

520247 is a deficient number, since it is larger than the sum of its proper divisors (120169).

520247 is a wasteful number, since it uses less digits than its factorization.

520247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 520247 is about 721.2814984456. The cubic root of 520247 is about 80.4272454546.

It can be divided in two parts, 520 and 247, that added together give a palindrome (767).

The spelling of 520247 in words is "five hundred twenty thousand, two hundred forty-seven".