505522 has 4 divisors (see below), whose sum is σ = 758286. Its totient is φ = 252760.

The previous prime is 505513. The next prime is 505523. The reversal of 505522 is 225505.

It is a Cunningham number, because it is equal to 711²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 505521 + 1 = 711^2 + 1^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 505522.

It is not an unprimeable number, because it can be changed into a prime (505523) by changing a digit.

505522 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 as a sum of consecutive naturals, namely, 126379 + ... + 126382.

2⁵⁰⁵⁵²² is an apocalyptic number.

505522 is a deficient number, since it is larger than the sum of its proper divisors (252764).

505522 is a wasteful number, since it uses less digits than its factorization.

505522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252763.

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 505522 is about 711.0007032345. Note that the first 3 decimals coincide. The cubic root of 505522 is about 79.6611711301.

The spelling of 505522 in words is "five hundred five thousand, five hundred twenty-two".