216548147 has 4 divisors (see below), whose sum is σ = 216759216. Its totient is φ = 216337080.

The previous prime is 216548119. The next prime is 216548173. The reversal of 216548147 is 741845612.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216548147 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 216548147.

It is not an unprimeable number, because it can be changed into a prime (216548047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103988 + ... + 106049.

It is an arithmetic number, because the mean of its divisors is an integer number (54189804).

Almost surely, 2^216548147 is an apocalyptic number.

216548147 is a deficient number, since it is larger than the sum of its proper divisors (211069).

216548147 is a wasteful number, since it uses less digits than its factorization.

216548147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211068.

The product of its digits is 53760, while the sum is 38.

The square root of 216548147 is about 14715.5749802718. The cubic root of 216548147 is about 600.5071147888.

The spelling of 216548147 in words is "two hundred sixteen million, five hundred forty-eight thousand, one hundred forty-seven".