33144005 has 8 divisors (see below), whose sum is σ = 39929112. Its totient is φ = 26411008.

The previous prime is 33143993. The next prime is 33144011. The reversal of 33144005 is 50044133.

It can be written as a sum of positive squares in 4 ways, for example, as 4937284 + 28206721 = 2222^2 + 5311^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33144005 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11612 + ... + 14181.

It is an arithmetic number, because the mean of its divisors is an integer number (4991139).

Almost surely, 2^33144005 is an apocalyptic number.

It is an amenable number.

33144005 is a deficient number, since it is larger than the sum of its proper divisors (6785107).

33144005 is a wasteful number, since it uses less digits than its factorization.

33144005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26055.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 33144005 is about 5757.0830287568. The cubic root of 33144005 is about 321.2193226218.

Adding to 33144005 its reverse (50044133), we get a palindrome (83188138).

The spelling of 33144005 in words is "thirty-three million, one hundred forty-four thousand, five".