521055212 has 12 divisors (see below), whose sum is σ = 913056480. Its totient is φ = 260181936.

The previous prime is 521055193. The next prime is 521055277. The reversal of 521055212 is 212550125.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83012 + ... + 89067.

It is an arithmetic number, because the mean of its divisors is an integer number (76088040).

Almost surely, 2^521055212 is an apocalyptic number.

It is an amenable number.

521055212 is a deficient number, since it is larger than the sum of its proper divisors (392001268).

521055212 is a wasteful number, since it uses less digits than its factorization.

521055212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172840 (or 172838 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 521055212 is about 22826.6338298050. The cubic root of 521055212 is about 804.6887224165.

The spelling of 521055212 in words is "five hundred twenty-one million, fifty-five thousand, two hundred twelve".