33030145 has 8 divisors (see below), whose sum is σ = 39778920. Its totient is φ = 26328960.

The previous prime is 33030121. The next prime is 33030163. The reversal of 33030145 is 54103033.

It can be written as a sum of positive squares in 4 ways, for example, as 14984641 + 18045504 = 3871^2 + 4248^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33030145 - 2¹⁷ = 32899073 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10350 + ... + 13159.

It is an arithmetic number, because the mean of its divisors is an integer number (4972365).

It is a Proth number, since it is equal to 63 ⋅ 2¹⁹ + 1 and 63 < 2¹⁹.

Almost surely, 2^33030145 is an apocalyptic number.

It is an amenable number.

33030145 is a deficient number, since it is larger than the sum of its proper divisors (6748775).

33030145 is a wasteful number, since it uses less digits than its factorization.

33030145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23795.

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

The square root of 33030145 is about 5747.1858330839. The cubic root of 33030145 is about 320.8510710757.

Adding to 33030145 its reverse (54103033), we get a palindrome (87133178).

The spelling of 33030145 in words is "thirty-three million, thirty thousand, one hundred forty-five".