16952321 has 4 divisors (see below), whose sum is σ = 16993200. Its totient is φ = 16911444.

The previous prime is 16952267. The next prime is 16952329. The reversal of 16952321 is 12325961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16952321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16952329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19811 + ... + 20648.

It is an arithmetic number, because the mean of its divisors is an integer number (4248300).

Almost surely, 2^16952321 is an apocalyptic number.

It is an amenable number.

16952321 is a deficient number, since it is larger than the sum of its proper divisors (40879).

16952321 is an equidigital number, since it uses as much as digits as its factorization.

16952321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40878.

The product of its digits is 3240, while the sum is 29.

The square root of 16952321 is about 4117.3196378226. The cubic root of 16952321 is about 256.8875494054.

The spelling of 16952321 in words is "sixteen million, nine hundred fifty-two thousand, three hundred twenty-one".