523522 has 4 divisors (see below), whose sum is σ = 785286. Its totient is φ = 261760.

The previous prime is 523519. The next prime is 523541. The reversal of 523522 is 225325.

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

It can be written as a sum of positive squares in only one way, i.e., 516961 + 6561 = 719^2 + 81^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 523522.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 130879 + ... + 130882.

2⁵²³⁵²² is an apocalyptic number.

523522 is a deficient number, since it is larger than the sum of its proper divisors (261764).

523522 is a wasteful number, since it uses less digits than its factorization.

523522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261763.

The product of its digits is 600, while the sum is 19.

The square root of 523522 is about 723.5482015733. The cubic root of 523522 is about 80.5956580527.

Adding to 523522 its reverse (225325), we get a palindrome (748847).

The spelling of 523522 in words is "five hundred twenty-three thousand, five hundred twenty-two".