522445 has 32 divisors (see below), whose sum is σ = 829440. Its totient is φ = 306240.

The previous prime is 522439. The next prime is 522449. The reversal of 522445 is 544225.

It is not a de Polignac number, because 522445 - 2⁵ = 522413 is a prime.

522445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522449) 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 31 ways as a sum of consecutive naturals, for example, 8826 + ... + 8884.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2⁵²²⁴⁴⁵ is an apocalyptic number.

522445 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

522445 is a deficient number, since it is larger than the sum of its proper divisors (306995).

522445 is a wasteful number, since it uses less digits than its factorization.

522445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105.

The product of its digits is 1600, while the sum is 22.

The square root of 522445 is about 722.8035694433. The cubic root of 522445 is about 80.5403524399.

It can be divided in two parts, 5 and 22445, that multiplied together give a square (112225 = 335²).

The spelling of 522445 in words is "five hundred twenty-two thousand, four hundred forty-five".