505422 has 24 divisors (see below), whose sum is σ = 1122264. Its totient is φ = 164304.

The previous prime is 505411. The next prime is 505429. The reversal of 505422 is 224505.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 505395 and 505404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505429) by changing a digit.

505422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448 + ... + 1100.

It is an arithmetic number, because the mean of its divisors is an integer number (46761).

2⁵⁰⁵⁴²² is an apocalyptic number.

505422 is an abundant number, since it is smaller than the sum of its proper divisors (616842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505422 is a wasteful number, since it uses less digits than its factorization.

505422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 505422 is about 710.9303763379. The cubic root of 505422 is about 79.6559180502.

Adding to 505422 its reverse (224505), we get a palindrome (729927).

The spelling of 505422 in words is "five hundred five thousand, four hundred twenty-two".