522340 has 72 divisors (see below), whose sum is σ = 1407672. Its totient is φ = 161280.

The previous prime is 522337. The next prime is 522371. The reversal of 522340 is 43225.

It can be written as a sum of positive squares in 4 ways, for example, as 12544 + 509796 = 112^2 + 714^2 .

It is a nialpdrome in base 14.

It is an unprimeable 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 in 23 ways as a sum of consecutive naturals, for example, 12720 + ... + 12760.

It is an arithmetic number, because the mean of its divisors is an integer number (19551).

2⁵²²³⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (703836).

522340 is an abundant number, since it is smaller than the sum of its proper divisors (885332).

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

522340 is a wasteful number, since it uses less digits than its factorization.

522340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 522340 is about 722.7309319519. The cubic root of 522340 is about 80.5349564629.

Adding to 522340 its reverse (43225), we get a palindrome (565565).

The spelling of 522340 in words is "five hundred twenty-two thousand, three hundred forty".