522403 has 8 divisors (see below), whose sum is σ = 613472. Its totient is φ = 435456.

The previous prime is 522391. The next prime is 522409. The reversal of 522403 is 304225.

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

It is not a de Polignac number, because 522403 - 2⁵ = 522371 is a prime.

It is a Duffinian number.

522403 is a lucky number.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750 + ... + 1267.

It is an arithmetic number, because the mean of its divisors is an integer number (76684).

2⁵²²⁴⁰³ is an apocalyptic number.

522403 is a deficient number, since it is larger than the sum of its proper divisors (91069).

522403 is a wasteful number, since it uses less digits than its factorization.

522403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061.

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

The square root of 522403 is about 722.7745153227. The cubic root of 522403 is about 80.5381941358.

Adding to 522403 its reverse (304225), we get a palindrome (826628).

The spelling of 522403 in words is "five hundred twenty-two thousand, four hundred three".