521872946 has 16 divisors (see below), whose sum is σ = 896046144. Its totient is φ = 223308144.

The previous prime is 521872931. The next prime is 521872961. The reversal of 521872946 is 649278125.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (521872931) and next prime (521872961).

It is a junction number, because it is equal to n+sod(n) for n = 521872897 and 521872906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19985 + ... + 37988.

It is an arithmetic number, because the mean of its divisors is an integer number (56002884).

Almost surely, 2^521872946 is an apocalyptic number.

521872946 is a deficient number, since it is larger than the sum of its proper divisors (374173198).

521872946 is a wasteful number, since it uses less digits than its factorization.

521872946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58625.

The product of its digits is 241920, while the sum is 44.

The square root of 521872946 is about 22844.5386471253. The cubic root of 521872946 is about 805.1094567160.

The spelling of 521872946 in words is "five hundred twenty-one million, eight hundred seventy-two thousand, nine hundred forty-six".