521464212 has 72 divisors (see below), whose sum is σ = 1340506440. Its totient is φ = 170899200.

The previous prime is 521464193. The next prime is 521464241. The reversal of 521464212 is 212464125.

521464212 is a `hidden beast` number, since 5 + 2 + 1 + 4 + 642 + 12 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 351787536 + 169676676 = 18756^2 + 13026^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 628614 + ... + 629442.

It is an arithmetic number, because the mean of its divisors is an integer number (18618145).

Almost surely, 2^521464212 is an apocalyptic number.

It is an amenable number.

521464212 is an abundant number, since it is smaller than the sum of its proper divisors (819042228).

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

521464212 is a wasteful number, since it uses less digits than its factorization.

521464212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113 (or 1108 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 521464212 is about 22835.5909054266. The cubic root of 521464212 is about 804.8992129776.

The spelling of 521464212 in words is "five hundred twenty-one million, four hundred sixty-four thousand, two hundred twelve".