506306 has 4 divisors (see below), whose sum is σ = 759462. Its totient is φ = 253152.

The previous prime is 506291. The next prime is 506327. The reversal of 506306 is 603605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 603605 = 5 ⋅120721.

It can be written as a sum of positive squares in only one way, i.e., 265225 + 241081 = 515^2 + 491^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126575 + ... + 126578.

2⁵⁰⁶³⁰⁶ is an apocalyptic number.

506306 is a deficient number, since it is larger than the sum of its proper divisors (253156).

506306 is a wasteful number, since it uses less digits than its factorization.

506306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253155.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 506306 is about 711.5518252383. The cubic root of 506306 is about 79.7023312905.

The spelling of 506306 in words is "five hundred six thousand, three hundred six".