216224575 has 12 divisors (see below), whose sum is σ = 306421360. Its totient is φ = 148268160.

The previous prime is 216224573. The next prime is 216224599. The reversal of 216224575 is 575422612.

It is not a de Polignac number, because 216224575 - 2¹ = 216224573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216224575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216224573) 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 11 ways as a sum of consecutive naturals, for example, 617610 + ... + 617959.

Almost surely, 2^216224575 is an apocalyptic number.

216224575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216224575 is a deficient number, since it is larger than the sum of its proper divisors (90196785).

216224575 is a wasteful number, since it uses less digits than its factorization.

216224575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235586 (or 1235581 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 216224575 is about 14704.5766685070. The cubic root of 216224575 is about 600.2078677915.

The spelling of 216224575 in words is "two hundred sixteen million, two hundred twenty-four thousand, five hundred seventy-five".