505215 has 24 divisors (see below), whose sum is σ = 892320. Its totient is φ = 264384.

The previous prime is 505213. The next prime is 505231. The reversal of 505215 is 512505.

It is not a de Polignac number, because 505215 - 2¹ = 505213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4581 + ... + 4689.

It is an arithmetic number, because the mean of its divisors is an integer number (37180).

2⁵⁰⁵²¹⁵ is an apocalyptic number.

505215 is a deficient number, since it is larger than the sum of its proper divisors (387105).

505215 is a wasteful number, since it uses less digits than its factorization.

505215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 505215 is about 710.7847775522. The cubic root of 505215 is about 79.6450419726.

The spelling of 505215 in words is "five hundred five thousand, two hundred fifteen".