521984316 has 24 divisors (see below), whose sum is σ = 1391958400. Its totient is φ = 149138352.

The previous prime is 521984297. The next prime is 521984317. The reversal of 521984316 is 613489125.

It is a super-2 number, since 2×521984316² = 544935252299975712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521984317) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3106966 + ... + 3107133.

Almost surely, 2^521984316 is an apocalyptic number.

It is an amenable number.

521984316 is an abundant number, since it is smaller than the sum of its proper divisors (869974084).

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

521984316 is a wasteful number, since it uses less digits than its factorization.

521984316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6214113 (or 6214111 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 521984316 is about 22846.9760799980. The cubic root of 521984316 is about 805.1667239514.

The spelling of 521984316 in words is "five hundred twenty-one million, nine hundred eighty-four thousand, three hundred sixteen".