522905 has 8 divisors (see below), whose sum is σ = 654912. Its totient is φ = 400048.

The previous prime is 522887. The next prime is 522919. The reversal of 522905 is 509225.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 522905 - 2¹⁰ = 521881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2159 + ... + 2388.

It is an arithmetic number, because the mean of its divisors is an integer number (81864).

2⁵²²⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

522905 is a deficient number, since it is larger than the sum of its proper divisors (132007).

522905 is a wasteful number, since it uses less digits than its factorization.

522905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 522905 is about 723.1217048326. The cubic root of 522905 is about 80.5639834402.

The spelling of 522905 in words is "five hundred twenty-two thousand, nine hundred five".