520347 has 8 divisors (see below), whose sum is σ = 717840. Its totient is φ = 334880.

The previous prime is 520339. The next prime is 520349. The reversal of 520347 is 743025.

It is a happy number.

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 520347 - 2³ = 520339 is a prime.

It is a super-2 number, since 2×520347² = 541522000818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520349) 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, 2904 + ... + 3077.

It is an arithmetic number, because the mean of its divisors is an integer number (89730).

2⁵²⁰³⁴⁷ is an apocalyptic number.

520347 is a deficient number, since it is larger than the sum of its proper divisors (197493).

520347 is a wasteful number, since it uses less digits than its factorization.

520347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 520347 is about 721.3508161775. The cubic root of 520347 is about 80.4323982694.

The spelling of 520347 in words is "five hundred twenty thousand, three hundred forty-seven".