501285388 has 12 divisors (see below), whose sum is σ = 877607640. Its totient is φ = 250540352.

The previous prime is 501285377. The next prime is 501285397. The reversal of 501285388 is 883582105.

It is a self number, because there is not a number n which added to its sum of digits gives 501285388.

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 3 ways as a sum of consecutive naturals, for example, 13981 + ... + 34612.

It is an arithmetic number, because the mean of its divisors is an integer number (73133970).

Almost surely, 2^501285388 is an apocalyptic number.

It is an amenable number.

501285388 is a deficient number, since it is larger than the sum of its proper divisors (376322252).

501285388 is a wasteful number, since it uses less digits than its factorization.

501285388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51176 (or 51174 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 501285388 is about 22389.4034757516. The cubic root of 501285388 is about 794.3800860719.

The spelling of 501285388 in words is "five hundred one million, two hundred eighty-five thousand, three hundred eighty-eight".