217975483 has 4 divisors (see below), whose sum is σ = 237791448. Its totient is φ = 198159520.

The previous prime is 217975463. The next prime is 217975489. The reversal of 217975483 is 384579712.

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

It is a cyclic number.

It is not a de Polignac number, because 217975483 - 2⁵ = 217975451 is a prime.

It is a super-2 number, since 2×217975483² = 95026622378166578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217975489) 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 3 ways as a sum of consecutive naturals, for example, 9907966 + ... + 9907987.

It is an arithmetic number, because the mean of its divisors is an integer number (59447862).

Almost surely, 2^217975483 is an apocalyptic number.

217975483 is a deficient number, since it is larger than the sum of its proper divisors (19815965).

217975483 is a wasteful number, since it uses less digits than its factorization.

217975483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19815964.

The product of its digits is 423360, while the sum is 46.

The square root of 217975483 is about 14763.9927865060. The cubic root of 217975483 is about 601.8236027656.

The spelling of 217975483 in words is "two hundred seventeen million, nine hundred seventy-five thousand, four hundred eighty-three".