503981385 has 8 divisors (see below), whose sum is σ = 806370240. Its totient is φ = 268790064.

The previous prime is 503981383. The next prime is 503981393. The reversal of 503981385 is 583189305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 503981385 - 2¹ = 503981383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (503981381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16799365 + ... + 16799394.

It is an arithmetic number, because the mean of its divisors is an integer number (100796280).

Almost surely, 2^503981385 is an apocalyptic number.

It is an amenable number.

503981385 is a deficient number, since it is larger than the sum of its proper divisors (302388855).

503981385 is a wasteful number, since it uses less digits than its factorization.

503981385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33598767.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 503981385 is about 22449.5297278139. The cubic root of 503981385 is about 795.8016438198.

The spelling of 503981385 in words is "five hundred three million, nine hundred eighty-one thousand, three hundred eighty-five".