33300145 has 4 divisors (see below), whose sum is σ = 39960180. Its totient is φ = 26640112.

The previous prime is 33300143. The next prime is 33300167. The reversal of 33300145 is 54100333.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15186609 + 18113536 = 3897^2 + 4256^2 .

It is a cyclic number.

It is not a de Polignac number, because 33300145 - 2¹ = 33300143 is a prime.

It is a super-2 number, since 2×33300145² = 2217799314042050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33300143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3330010 + ... + 3330019.

It is an arithmetic number, because the mean of its divisors is an integer number (9990045).

Almost surely, 2^33300145 is an apocalyptic number.

It is an amenable number.

33300145 is a deficient number, since it is larger than the sum of its proper divisors (6660035).

33300145 is an equidigital number, since it uses as much as digits as its factorization.

33300145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660034.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 33300145 is about 5770.6277821395. The cubic root of 33300145 is about 321.7229494554.

Adding to 33300145 its reverse (54100333), we get a palindrome (87400478).

The spelling of 33300145 in words is "thirty-three million, three hundred thousand, one hundred forty-five".