522401 has 4 divisors (see below), whose sum is σ = 569904. Its totient is φ = 474900.

The previous prime is 522391. The next prime is 522409. The reversal of 522401 is 104225.

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 522401 - 2⁶ = 522337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (522409) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 23735 + ... + 23756.

It is an arithmetic number, because the mean of its divisors is an integer number (142476).

2⁵²²⁴⁰¹ is an apocalyptic number.

It is an amenable number.

522401 is a deficient number, since it is larger than the sum of its proper divisors (47503).

522401 is a wasteful number, since it uses less digits than its factorization.

522401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47502.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 522401 is about 722.7731317640. The cubic root of 522401 is about 80.5380913566.

Adding to 522401 its reverse (104225), we get a palindrome (626626).

The spelling of 522401 in words is "five hundred twenty-two thousand, four hundred one".