33250729 has 2 divisors, whose sum is σ = 33250730. Its totient is φ = 33250728.

The previous prime is 33250717. The next prime is 33250751. The reversal of 33250729 is 92705233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31663129 + 1587600 = 5627^2 + 1260^2 .

It is a cyclic number.

It is not a de Polignac number, because 33250729 - 2⁷ = 33250601 is a prime.

It is a super-2 number, since 2×33250729² = 2211221958062882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33250729.

It is not a weakly prime, because it can be changed into another prime (33253729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16625364 + 16625365.

It is an arithmetic number, because the mean of its divisors is an integer number (16625365).

Almost surely, 2^33250729 is an apocalyptic number.

It is an amenable number.

33250729 is a deficient number, since it is larger than the sum of its proper divisors (1).

33250729 is an equidigital number, since it uses as much as digits as its factorization.

33250729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 33250729 is about 5766.3445093057. The cubic root of 33250729 is about 321.5637296094.

The spelling of 33250729 in words is "thirty-three million, two hundred fifty thousand, seven hundred twenty-nine".