33043973 has 2 divisors, whose sum is σ = 33043974. Its totient is φ = 33043972.

The previous prime is 33043957. The next prime is 33043987. The reversal of 33043973 is 37934033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31550689 + 1493284 = 5617^2 + 1222^2 .

It is an emirp because it is prime and its reverse (37934033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33043973 - 2⁴ = 33043957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33043943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16521986 + 16521987.

It is an arithmetic number, because the mean of its divisors is an integer number (16521987).

Almost surely, 2^33043973 is an apocalyptic number.

It is an amenable number.

33043973 is a deficient number, since it is larger than the sum of its proper divisors (1).

33043973 is an equidigital number, since it uses as much as digits as its factorization.

33043973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 32.

The square root of 33043973 is about 5748.3887307662. The cubic root of 33043973 is about 320.8958393685.

The spelling of 33043973 in words is "thirty-three million, forty-three thousand, nine hundred seventy-three".