505315 has 4 divisors (see below), whose sum is σ = 606384. Its totient is φ = 404248.

The previous prime is 505313. The next prime is 505319. The reversal of 505315 is 513505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 513505 = 5 ⋅102701.

It is a cyclic number.

It is not a de Polignac number, because 505315 - 2¹ = 505313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505292 and 505301.

It is not an unprimeable number, because it can be changed into a prime (505313) 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, 50527 + ... + 50536.

It is an arithmetic number, because the mean of its divisors is an integer number (151596).

2⁵⁰⁵³¹⁵ is an apocalyptic number.

505315 is a deficient number, since it is larger than the sum of its proper divisors (101069).

505315 is a wasteful number, since it uses less digits than its factorization.

505315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101068.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 505315 is about 710.8551188533. The cubic root of 505315 is about 79.6502964872.

It can be divided in two parts, 505 and 315, that added together give a triangular number (820 = T₄₀).

The spelling of 505315 in words is "five hundred five thousand, three hundred fifteen".