216885503 has 4 divisors (see below), whose sum is σ = 216996000. Its totient is φ = 216775008.

The previous prime is 216885497. The next prime is 216885509. The reversal of 216885503 is 305588612.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (216885497) and next prime (216885509).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216885503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216885509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52250 + ... + 56247.

It is an arithmetic number, because the mean of its divisors is an integer number (54249000).

Almost surely, 2^216885503 is an apocalyptic number.

216885503 is a deficient number, since it is larger than the sum of its proper divisors (110497).

216885503 is a wasteful number, since it uses less digits than its factorization.

216885503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110496.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 216885503 is about 14727.0330684765. The cubic root of 216885503 is about 600.8187923088.

The spelling of 216885503 in words is "two hundred sixteen million, eight hundred eighty-five thousand, five hundred three".