33138563 has 2 divisors, whose sum is σ = 33138564. Its totient is φ = 33138562.

The previous prime is 33138557. The next prime is 33138577. The reversal of 33138563 is 36583133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33138563 - 2⁸ = 33138307 is a prime.

It is not a weakly prime, because it can be changed into another prime (33138533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16569281 + 16569282.

It is an arithmetic number, because the mean of its divisors is an integer number (16569282).

Almost surely, 2^33138563 is an apocalyptic number.

33138563 is a deficient number, since it is larger than the sum of its proper divisors (1).

33138563 is an equidigital number, since it uses as much as digits as its factorization.

33138563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 32.

The square root of 33138563 is about 5756.6103741699. The cubic root of 33138563 is about 321.2017410488.

The spelling of 33138563 in words is "thirty-three million, one hundred thirty-eight thousand, five hundred sixty-three".