33113145 has 32 divisors (see below), whose sum is σ = 58286592. Its totient is φ = 15950592.

The previous prime is 33113131. The next prime is 33113149. The reversal of 33113145 is 54131133.

It is not a de Polignac number, because 33113145 - 2⁶ = 33113081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33113149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7359 + ... + 10971.

It is an arithmetic number, because the mean of its divisors is an integer number (1821456).

Almost surely, 2^33113145 is an apocalyptic number.

It is an amenable number.

33113145 is a deficient number, since it is larger than the sum of its proper divisors (25173447).

33113145 is a wasteful number, since it uses less digits than its factorization.

33113145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681.

The product of its digits is 540, while the sum is 21.

The square root of 33113145 is about 5754.4022278600. The cubic root of 33113145 is about 321.1195971314.

Adding to 33113145 its reverse (54131133), we get a palindrome (87244278).

The spelling of 33113145 in words is "thirty-three million, one hundred thirteen thousand, one hundred forty-five".