217272049 has 8 divisors (see below), whose sum is σ = 228852000. Its totient is φ = 205706592.

The previous prime is 217272047. The next prime is 217272059. The reversal of 217272049 is 940272712.

It is a happy number.

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 217272049 - 2¹ = 217272047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217272047) 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, 41997 + ... + 46885.

It is an arithmetic number, because the mean of its divisors is an integer number (28606500).

Almost surely, 2^217272049 is an apocalyptic number.

It is an amenable number.

217272049 is a deficient number, since it is larger than the sum of its proper divisors (11579951).

217272049 is a wasteful number, since it uses less digits than its factorization.

217272049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7247.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 217272049 is about 14740.1509151026. The cubic root of 217272049 is about 601.1755185709.

The spelling of 217272049 in words is "two hundred seventeen million, two hundred seventy-two thousand, forty-nine".