33130155 has 16 divisors (see below), whose sum is σ = 53362944. Its totient is φ = 17551200.

The previous prime is 33130099. The next prime is 33130157. The reversal of 33130155 is 55103133.

It is a happy number.

It is not a de Polignac number, because 33130155 - 2⁹ = 33129643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33130157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5049 + ... + 9578.

It is an arithmetic number, because the mean of its divisors is an integer number (3335184).

Almost surely, 2^33130155 is an apocalyptic number.

33130155 is a deficient number, since it is larger than the sum of its proper divisors (20232789).

33130155 is a wasteful number, since it uses less digits than its factorization.

33130155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14786.

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 33130155 is about 5755.8800369709. The cubic root of 33130155 is about 321.1745733783.

Adding to 33130155 its reverse (55103133), we get a palindrome (88233288).

The spelling of 33130155 in words is "thirty-three million, one hundred thirty thousand, one hundred fifty-five".