522731 has 4 divisors (see below), whose sum is σ = 570264. Its totient is φ = 475200.

The previous prime is 522719. The next prime is 522737. The reversal of 522731 is 137225.

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

It is not a de Polignac number, because 522731 - 2¹⁰ = 521707 is a prime.

It is a super-2 number, since 2×522731² = 546495396722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (522737) 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, 23750 + ... + 23771.

It is an arithmetic number, because the mean of its divisors is an integer number (142566).

2⁵²²⁷³¹ is an apocalyptic number.

522731 is a deficient number, since it is larger than the sum of its proper divisors (47533).

522731 is a wasteful number, since it uses less digits than its factorization.

522731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47532.

The product of its digits is 420, while the sum is 20.

The square root of 522731 is about 723.0013831245. The cubic root of 522731 is about 80.5550463878. Note that the first 3 decimals are identical.

Adding to 522731 its reverse (137225), we get a palindrome (659956).

The spelling of 522731 in words is "five hundred twenty-two thousand, seven hundred thirty-one".