505299 has 4 divisors (see below), whose sum is σ = 673736. Its totient is φ = 336864.

The previous prime is 505283. The next prime is 505301. The reversal of 505299 is 992505.

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

It is not a de Polignac number, because 505299 - 2⁴ = 505283 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84214 + ... + 84219.

It is an arithmetic number, because the mean of its divisors is an integer number (168434).

2⁵⁰⁵²⁹⁹ is an apocalyptic number.

505299 is a deficient number, since it is larger than the sum of its proper divisors (168437).

505299 is a wasteful number, since it uses less digits than its factorization.

505299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168436.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 505299 is about 710.8438647129. The cubic root of 505299 is about 79.6494558115.

It can be divided in two parts, 5052 and 99, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 505299 in words is "five hundred five thousand, two hundred ninety-nine".