520921248 has 48 divisors (see below), whose sum is σ = 1387844640. Its totient is φ = 171046656.

The previous prime is 520921201. The next prime is 520921253. The reversal of 520921248 is 842129025.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34063 + ... + 46926.

It is an arithmetic number, because the mean of its divisors is an integer number (28913430).

Almost surely, 2^520921248 is an apocalyptic number.

It is an amenable number.

520921248 is an abundant number, since it is smaller than the sum of its proper divisors (866923392).

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

520921248 is a wasteful number, since it uses less digits than its factorization.

520921248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81069 (or 81061 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 520921248 is about 22823.6992619514. The cubic root of 520921248 is about 804.6197543191.

The spelling of 520921248 in words is "five hundred twenty million, nine hundred twenty-one thousand, two hundred forty-eight".