506815 has 4 divisors (see below), whose sum is σ = 608184. Its totient is φ = 405448.

The previous prime is 506809. The next prime is 506837. The reversal of 506815 is 518605.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 506815 - 2⁵ = 506783 is a prime.

It is a super-2 number, since 2×506815² = 513722888450, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 506815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50677 + ... + 50686.

It is an arithmetic number, because the mean of its divisors is an integer number (152046).

2⁵⁰⁶⁸¹⁵ is an apocalyptic number.

506815 is a deficient number, since it is larger than the sum of its proper divisors (101369).

506815 is a wasteful number, since it uses less digits than its factorization.

506815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101368.

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

The square root of 506815 is about 711.9094043486. The cubic root of 506815 is about 79.7290311514.

The spelling of 506815 in words is "five hundred six thousand, eight hundred fifteen".