217553113 has 8 divisors (see below), whose sum is σ = 229564800. Its totient is φ = 205754208.

The previous prime is 217553069. The next prime is 217553117. The reversal of 217553113 is 311355712.

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 217553113 - 2¹⁷ = 217422041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217553117) 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, 51093 + ... + 55186.

It is an arithmetic number, because the mean of its divisors is an integer number (28695600).

Almost surely, 2^217553113 is an apocalyptic number.

217553113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

217553113 is a deficient number, since it is larger than the sum of its proper divisors (12011687).

217553113 is a wasteful number, since it uses less digits than its factorization.

217553113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106391.

The product of its digits is 3150, while the sum is 28.

The square root of 217553113 is about 14749.6817931778. The cubic root of 217553113 is about 601.4346345647.

The spelling of 217553113 in words is "two hundred seventeen million, five hundred fifty-three thousand, one hundred thirteen".