217153996 has 6 divisors (see below), whose sum is σ = 380019500. Its totient is φ = 108576996.

The previous prime is 217153991. The next prime is 217154009. The reversal of 217153996 is 699351712.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (217153991) 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 as a sum of consecutive naturals, namely, 27144246 + ... + 27144253.

Almost surely, 2^217153996 is an apocalyptic number.

It is an amenable number.

217153996 is a deficient number, since it is larger than the sum of its proper divisors (162865504).

217153996 is a wasteful number, since it uses less digits than its factorization.

217153996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54288503 (or 54288501 counting only the distinct ones).

The product of its digits is 102060, while the sum is 43.

The square root of 217153996 is about 14736.1459004721. The cubic root of 217153996 is about 601.0666175695.

The spelling of 217153996 in words is "two hundred seventeen million, one hundred fifty-three thousand, nine hundred ninety-six".