505273 has 4 divisors (see below), whose sum is σ = 510580. Its totient is φ = 499968.

The previous prime is 505237. The next prime is 505277. The reversal of 505273 is 372505.

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

It can be written as a sum of positive squares in 2 ways, for example, as 394384 + 110889 = 628^2 + 333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505273 is a prime.

It is a Duffinian number.

505273 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (505277) 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, 2508 + ... + 2701.

It is an arithmetic number, because the mean of its divisors is an integer number (127645).

2⁵⁰⁵²⁷³ is an apocalyptic number.

It is an amenable number.

505273 is a deficient number, since it is larger than the sum of its proper divisors (5307).

505273 is an equidigital number, since it uses as much as digits as its factorization.

505273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 505273 is about 710.8255763547. The cubic root of 505273 is about 79.6480896755.

Adding to 505273 its reverse (372505), we get a palindrome (877778).

The spelling of 505273 in words is "five hundred five thousand, two hundred seventy-three".