522638 has 8 divisors (see below), whose sum is σ = 811080. Its totient is φ = 252280.

The previous prime is 522637. The next prime is 522659. The reversal of 522638 is 836225.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 5⁷ + 2¹⁵ + 6⁷ + 2¹⁷ + 3⁶ + 8 .

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 522638.

It is not an unprimeable number, because it can be changed into a prime (522637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4448 + ... + 4563.

It is an arithmetic number, because the mean of its divisors is an integer number (101385).

2⁵²²⁶³⁸ is an apocalyptic number.

522638 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

522638 is a deficient number, since it is larger than the sum of its proper divisors (288442).

522638 is a wasteful number, since it uses less digits than its factorization.

522638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9042.

The product of its digits is 2880, while the sum is 26.

The square root of 522638 is about 722.9370650340. The cubic root of 522638 is about 80.5502688740.

The spelling of 522638 in words is "five hundred twenty-two thousand, six hundred thirty-eight".