520403522 has 4 divisors (see below), whose sum is σ = 780605286. Its totient is φ = 260201760.

The previous prime is 520403491. The next prime is 520403537. The reversal of 520403522 is 225304025.

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., 488807881 + 31595641 = 22109^2 + 5621^2 .

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 as a sum of consecutive naturals, namely, 130100879 + ... + 130100882.

Almost surely, 2^520403522 is an apocalyptic number.

520403522 is a deficient number, since it is larger than the sum of its proper divisors (260201764).

520403522 is a wasteful number, since it uses less digits than its factorization.

520403522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260201763.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 520403522 is about 22812.3545913174. The cubic root of 520403522 is about 804.3531045132.

Adding to 520403522 its reverse (225304025), we get a palindrome (745707547).

The spelling of 520403522 in words is "five hundred twenty million, four hundred three thousand, five hundred twenty-two".