217552006 has 16 divisors (see below), whose sum is σ = 373206816. Its totient is φ = 93171456.

The previous prime is 217552003. The next prime is 217552019. The reversal of 217552006 is 600255712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217552003) 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, 19180 + ... + 28336.

It is an arithmetic number, because the mean of its divisors is an integer number (23325426).

Almost surely, 2^217552006 is an apocalyptic number.

217552006 is a deficient number, since it is larger than the sum of its proper divisors (155654810).

217552006 is a wasteful number, since it uses less digits than its factorization.

217552006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10863.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 217552006 is about 14749.6442668967. The cubic root of 217552006 is about 601.4336144471.

The spelling of 217552006 in words is "two hundred seventeen million, five hundred fifty-two thousand, six".