17233921 has 2 divisors, whose sum is σ = 17233922. Its totient is φ = 17233920.

The previous prime is 17233919. The next prime is 17233939. The reversal of 17233921 is 12933271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12503296 + 4730625 = 3536^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 17233921 - 2¹ = 17233919 is a prime.

Together with 17233919, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 17233921.

It is not a weakly prime, because it can be changed into another prime (17233961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8616960 + 8616961.

It is an arithmetic number, because the mean of its divisors is an integer number (8616961).

Almost surely, 2^17233921 is an apocalyptic number.

It is an amenable number.

17233921 is a deficient number, since it is larger than the sum of its proper divisors (1).

17233921 is an equidigital number, since it uses as much as digits as its factorization.

17233921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 28.

The square root of 17233921 is about 4151.3757960464. The cubic root of 17233921 is about 258.3021568574.

The spelling of 17233921 in words is "seventeen million, two hundred thirty-three thousand, nine hundred twenty-one".