217405483 has 4 divisors (see below), whose sum is σ = 218104848. Its totient is φ = 216706120.

The previous prime is 217405481. The next prime is 217405519. The reversal of 217405483 is 384504712.

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 217405483 - 2¹ = 217405481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217405481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349216 + ... + 349837.

It is an arithmetic number, because the mean of its divisors is an integer number (54526212).

Almost surely, 2^217405483 is an apocalyptic number.

217405483 is a deficient number, since it is larger than the sum of its proper divisors (699365).

217405483 is an equidigital number, since it uses as much as digits as its factorization.

217405483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699364.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 217405483 is about 14744.6764291388. The cubic root of 217405483 is about 601.2985606875.

The spelling of 217405483 in words is "two hundred seventeen million, four hundred five thousand, four hundred eighty-three".