506518 has 8 divisors (see below), whose sum is σ = 763560. Its totient is φ = 252000.

The previous prime is 506507. The next prime is 506531. The reversal of 506518 is 815605.

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

It is a junction number, because it is equal to n+sod(n) for n = 506492 and 506501.

It is a congruent number.

It is an unprimeable number.

506518 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 in 3 ways as a sum of consecutive naturals, for example, 3 + ... + 1006.

It is an arithmetic number, because the mean of its divisors is an integer number (95445).

2⁵⁰⁶⁵¹⁸ is an apocalyptic number.

506518 is a deficient number, since it is larger than the sum of its proper divisors (257042).

506518 is a wasteful number, since it uses less digits than its factorization.

506518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 506518 is about 711.7007798225. The cubic root of 506518 is about 79.7134540347.

It can be divided in two parts, 506 and 518, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 506518 in words is "five hundred six thousand, five hundred eighteen".