216227546 has 4 divisors (see below), whose sum is σ = 324341322. Its totient is φ = 108113772.

The previous prime is 216227527. The next prime is 216227549. The reversal of 216227546 is 645722612.

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

It can be written as a sum of positive squares in only one way, i.e., 137710225 + 78517321 = 11735^2 + 8861^2 .

It is not an unprimeable number, because it can be changed into a prime (216227549) 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 as a sum of consecutive naturals, namely, 54056885 + ... + 54056888.

Almost surely, 2^216227546 is an apocalyptic number.

216227546 is a deficient number, since it is larger than the sum of its proper divisors (108113776).

216227546 is a wasteful number, since it uses less digits than its factorization.

216227546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108113775.

The product of its digits is 40320, while the sum is 35.

The square root of 216227546 is about 14704.6776911294. The cubic root of 216227546 is about 600.2106167997.

The spelling of 216227546 in words is "two hundred sixteen million, two hundred twenty-seven thousand, five hundred forty-six".