522521522 has 8 divisors (see below), whose sum is σ = 784479900. Its totient is φ = 261028224.

The previous prime is 522521491. The next prime is 522521551. The reversal of 522521522 is 225125225.

It can be written as a sum of positive squares in 2 ways, for example, as 384905161 + 137616361 = 19619^2 + 11731^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 522521491 and 522521500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113447 + ... + 117962.

Almost surely, 2^522521522 is an apocalyptic number.

522521522 is a deficient number, since it is larger than the sum of its proper divisors (261958378).

522521522 is a wasteful number, since it uses less digits than its factorization.

522521522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232540.

The product of its digits is 4000, while the sum is 26.

The square root of 522521522 is about 22858.7296672409. The cubic root of 522521522 is about 805.4428446969.

Adding to 522521522 its reverse (225125225), we get a palindrome (747646747).

The spelling of 522521522 in words is "five hundred twenty-two million, five hundred twenty-one thousand, five hundred twenty-two".