503856 has 30 divisors (see below), whose sum is σ = 1410500. Its totient is φ = 167904.

The previous prime is 503851. The next prime is 503857. The reversal of 503856 is 658305.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (503851) by changing a digit.

503856 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1606 + ... + 1893.

2⁵⁰³⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

503856 is an abundant number, since it is smaller than the sum of its proper divisors (906644).

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

503856 is a wasteful number, since it uses less digits than its factorization.

503856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513 (or 3504 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 503856 is about 709.8281482162. The cubic root of 503856 is about 79.5735642794.

Subtracting 503856 from its reverse (658305), we obtain a square (154449 = 393²).

The spelling of 503856 in words is "five hundred three thousand, eight hundred fifty-six".