501921912 has 32 divisors (see below), whose sum is σ = 1257742080. Its totient is φ = 166915680.

The previous prime is 501921887. The next prime is 501921949. The reversal of 501921912 is 219129105.

It is a self number, because there is not a number n which added to its sum of digits gives 501921912.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 13918 + ... + 34605.

It is an arithmetic number, because the mean of its divisors is an integer number (39304440).

Almost surely, 2^501921912 is an apocalyptic number.

It is an amenable number.

501921912 is an abundant number, since it is smaller than the sum of its proper divisors (755820168).

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

501921912 is a wasteful number, since it uses less digits than its factorization.

501921912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48963 (or 48959 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 501921912 is about 22403.6138156325. The cubic root of 501921912 is about 794.7161741461.

The spelling of 501921912 in words is "five hundred one million, nine hundred twenty-one thousand, nine hundred twelve".