216345533 has 8 divisors (see below), whose sum is σ = 228577920. Its totient is φ = 204197760.

The previous prime is 216345527. The next prime is 216345607. The reversal of 216345533 is 335543612.

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

It is a cyclic number.

It is not a de Polignac number, because 216345533 - 2⁴ = 216345517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216345533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216345433) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15860 + ... + 26157.

It is an arithmetic number, because the mean of its divisors is an integer number (28572240).

Almost surely, 2^216345533 is an apocalyptic number.

It is an amenable number.

216345533 is a deficient number, since it is larger than the sum of its proper divisors (12232387).

216345533 is a wasteful number, since it uses less digits than its factorization.

216345533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42307.

The product of its digits is 32400, while the sum is 32.

The square root of 216345533 is about 14708.6890306376. The cubic root of 216345533 is about 600.3197675139.

The spelling of 216345533 in words is "two hundred sixteen million, three hundred forty-five thousand, five hundred thirty-three".