522121316 has 6 divisors (see below), whose sum is σ = 913712310. Its totient is φ = 261060656.

The previous prime is 522121309. The next prime is 522121333. The reversal of 522121316 is 613121225.

It can be written as a sum of positive squares in only one way, i.e., 435556900 + 86564416 = 20870^2 + 9304^2 .

It is a super-2 number, since 2×522121316² = 545221337243143712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 522121291 and 522121300.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65265161 + ... + 65265168.

It is an arithmetic number, because the mean of its divisors is an integer number (152285385).

Almost surely, 2^522121316 is an apocalyptic number.

It is an amenable number.

522121316 is a deficient number, since it is larger than the sum of its proper divisors (391590994).

522121316 is a wasteful number, since it uses less digits than its factorization.

522121316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130530333 (or 130530331 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 522121316 is about 22849.9740918890. The cubic root of 522121316 is about 805.2371591406.

Subtracting 522121316 from its reverse (613121225), we obtain a palindrome (90999909).

The spelling of 522121316 in words is "five hundred twenty-two million, one hundred twenty-one thousand, three hundred sixteen".