521662912 has 28 divisors (see below), whose sum is σ = 1048288480. Its totient is φ = 257527296.

The previous prime is 521662903. The next prime is 521662919. The reversal of 521662912 is 219266125.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521662919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46533 + ... + 56644.

Almost surely, 2^521662912 is an apocalyptic number.

It is an amenable number.

521662912 is an abundant number, since it is smaller than the sum of its proper divisors (526625568).

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

521662912 is a wasteful number, since it uses less digits than its factorization.

521662912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103268 (or 103258 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 521662912 is about 22839.9411557911. The cubic root of 521662912 is about 805.0014335841.

The spelling of 521662912 in words is "five hundred twenty-one million, six hundred sixty-two thousand, nine hundred twelve".