522745 has 4 divisors (see below), whose sum is σ = 627300. Its totient is φ = 418192.

The previous prime is 522737. The next prime is 522749. The reversal of 522745 is 547225.

522745 is nontrivially palindromic in base 8 and base 15.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190969 + 331776 = 437^2 + 576^2 .

It is a cyclic number.

It is not a de Polignac number, because 522745 - 2³ = 522737 is a prime.

It is a d-powerful number, because it can be written as 5⁴ + 2⁶ + 7³ + 2¹⁷ + 4² + 5⁸ .

It is not an unprimeable number, because it can be changed into a prime (522749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52270 + ... + 52279.

It is an arithmetic number, because the mean of its divisors is an integer number (156825).

2⁵²²⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

522745 is a deficient number, since it is larger than the sum of its proper divisors (104555).

522745 is a wasteful number, since it uses less digits than its factorization.

522745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104554.

The product of its digits is 2800, while the sum is 25.

The square root of 522745 is about 723.0110649222. The cubic root of 522745 is about 80.5557655343. Note that the first 3 decimals are identical.

The spelling of 522745 in words is "five hundred twenty-two thousand, seven hundred forty-five".