505245 has 16 divisors (see below), whose sum is σ = 870912. Its totient is φ = 248640.

The previous prime is 505237. The next prime is 505277. The reversal of 505245 is 542505.

505245 = T₁₈₄ + T₁₈₅ + ... + T₂₀₉.

It is not a de Polignac number, because 505245 - 2³ = 505237 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1101 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2⁵⁰⁵²⁴⁵ is an apocalyptic number.

It is an amenable number.

505245 is a deficient number, since it is larger than the sum of its proper divisors (365667).

505245 is a wasteful number, since it uses less digits than its factorization.

505245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 505245 is about 710.8058806735. The cubic root of 505245 is about 79.6466183998.

The spelling of 505245 in words is "five hundred five thousand, two hundred forty-five".