509985750 has 32 divisors (see below), whose sum is σ = 1272926304. Its totient is φ = 135996000.

The previous prime is 509985731. The next prime is 509985779. The reversal of 509985750 is 57589905.

It is a self number, because there is not a number n which added to its sum of digits gives 509985750.

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 15 ways as a sum of consecutive naturals, for example, 339241 + ... + 340740.

It is an arithmetic number, because the mean of its divisors is an integer number (39778947).

Almost surely, 2^509985750 is an apocalyptic number.

509985750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

509985750 is an abundant number, since it is smaller than the sum of its proper divisors (762940554).

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

509985750 is a wasteful number, since it uses less digits than its factorization.

509985750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680001 (or 679991 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 48.

The square root of 509985750 is about 22582.8640787656. The cubic root of 509985750 is about 798.9495327102.

The spelling of 509985750 in words is "five hundred nine million, nine hundred eighty-five thousand, seven hundred fifty".