505222 has 4 divisors (see below), whose sum is σ = 757836. Its totient is φ = 252610.

The previous prime is 505213. The next prime is 505231. The reversal of 505222 is 222505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222505 = 5 ⋅44501.

It is an interprime number because it is at equal distance from previous prime (505213) and next prime (505231).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 505196 and 505205.

It is a congruent number.

It is an unprimeable number.

505222 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126304 + ... + 126307.

It is an arithmetic number, because the mean of its divisors is an integer number (189459).

2⁵⁰⁵²²² is an apocalyptic number.

505222 is a deficient number, since it is larger than the sum of its proper divisors (252614).

505222 is a wasteful number, since it uses less digits than its factorization.

505222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252613.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 505222 is about 710.7897016699. The cubic root of 505222 is about 79.6454098112.

Adding to 505222 its reverse (222505), we get a palindrome (727727).

It can be divided in two parts, 505 and 222, that added together give a palindrome (727).

The spelling of 505222 in words is "five hundred five thousand, two hundred twenty-two".