521915948 has 12 divisors (see below), whose sum is σ = 913706472. Its totient is φ = 260856960.

The previous prime is 521915923. The next prime is 521915971. The reversal of 521915948 is 849519125.

It is a junction number, because it is equal to n+sod(n) for n = 521915899 and 521915908.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12965 + ... + 34812.

It is an arithmetic number, because the mean of its divisors is an integer number (76142206).

Almost surely, 2^521915948 is an apocalyptic number.

It is an amenable number.

521915948 is a deficient number, since it is larger than the sum of its proper divisors (391790524).

521915948 is a wasteful number, since it uses less digits than its factorization.

521915948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50512 (or 50510 counting only the distinct ones).

The product of its digits is 129600, while the sum is 44.

The square root of 521915948 is about 22845.4798154909. The cubic root of 521915948 is about 805.1315696116.

The spelling of 521915948 in words is "five hundred twenty-one million, nine hundred fifteen thousand, nine hundred forty-eight".