522221052 has 12 divisors (see below), whose sum is σ = 1218515816. Its totient is φ = 174073680.

The previous prime is 522221041. The next prime is 522221081. The reversal of 522221052 is 250122225.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21759199 + ... + 21759222.

Almost surely, 2^522221052 is an apocalyptic number.

It is an amenable number.

522221052 is an abundant number, since it is smaller than the sum of its proper divisors (696294764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

522221052 is a wasteful number, since it uses less digits than its factorization.

522221052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43518428 (or 43518426 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 522221052 is about 22852.1563971543. The cubic root of 522221052 is about 805.2884282089.

Adding to 522221052 its reverse (250122225), we get a palindrome (772343277).

The spelling of 522221052 in words is "five hundred twenty-two million, two hundred twenty-one thousand, fifty-two".