522241 has 4 divisors (see below), whose sum is σ = 524032. Its totient is φ = 520452.

The previous prime is 522239. The next prime is 522251. The reversal of 522241 is 142225.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 522241 - 2¹ = 522239 is a prime.

It is an Ulam number.

It is a Duffinian number.

522241 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (131008).

522241 is a Friedman number, since it can be written as (4^5-2)^2/2-1, using all its digits and the basic arithmetic operations.

It is a Proth number, since it is equal to 255 ⋅ 2¹¹ + 1 and 255 < 2¹¹.

2⁵²²²⁴¹ is an apocalyptic number.

It is an amenable number.

522241 is a deficient number, since it is larger than the sum of its proper divisors (1791).

522241 is a wasteful number, since it uses less digits than its factorization.

522241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790.

The product of its digits is 160, while the sum is 16.

The square root of 522241 is about 722.6624384870. The cubic root of 522241 is about 80.5298681650.

Subtracting from 522241 its sum of digits (16), we obtain a palindrome (522225).

Adding to 522241 its reverse (142225), we get a palindrome (664466).

It can be divided in two parts, 52224 and 1, that added together give a palindrome (52225).

The spelling of 522241 in words is "five hundred twenty-two thousand, two hundred forty-one".