217483953 has 8 divisors (see below), whose sum is σ = 290046816. Its totient is φ = 144955200.

The previous prime is 217483951. The next prime is 217483997. The reversal of 217483953 is 359384712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 217483953 - 2¹ = 217483951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (217483951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19758 + ... + 28728.

It is an arithmetic number, because the mean of its divisors is an integer number (36255852).

Almost surely, 2^217483953 is an apocalyptic number.

It is an amenable number.

217483953 is a deficient number, since it is larger than the sum of its proper divisors (72562863).

217483953 is an equidigital number, since it uses as much as digits as its factorization.

217483953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17055.

The product of its digits is 181440, while the sum is 42.

The square root of 217483953 is about 14747.3371494653. The cubic root of 217483953 is about 601.3708959107.

The spelling of 217483953 in words is "two hundred seventeen million, four hundred eighty-three thousand, nine hundred fifty-three".