22991333 has 2 divisors, whose sum is σ = 22991334. Its totient is φ = 22991332.

The previous prime is 22991323. The next prime is 22991357. The reversal of 22991333 is 33319922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22877089 + 114244 = 4783^2 + 338^2 .

It is a cyclic number.

It is not a de Polignac number, because 22991333 - 2⁴ = 22991317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22991333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22991303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11495666 + 11495667.

It is an arithmetic number, because the mean of its divisors is an integer number (11495667).

Almost surely, 2^22991333 is an apocalyptic number.

It is an amenable number.

22991333 is a deficient number, since it is larger than the sum of its proper divisors (1).

22991333 is an equidigital number, since it uses as much as digits as its factorization.

22991333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 32.

The square root of 22991333 is about 4794.9278409586. The cubic root of 22991333 is about 284.3509720551.

The spelling of 22991333 in words is "twenty-two million, nine hundred ninety-one thousand, three hundred thirty-three".