33138545 has 16 divisors (see below), whose sum is σ = 43580160. Its totient is φ = 23990400.

The previous prime is 33138533. The next prime is 33138551. The reversal of 33138545 is 54583133.

It is not a de Polignac number, because 33138545 - 2⁴ = 33138529 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11885 + ... + 14405.

It is an arithmetic number, because the mean of its divisors is an integer number (2723760).

Almost surely, 2^33138545 is an apocalyptic number.

It is an amenable number.

33138545 is a deficient number, since it is larger than the sum of its proper divisors (10441615).

33138545 is a wasteful number, since it uses less digits than its factorization.

33138545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776.

The product of its digits is 21600, while the sum is 32.

The square root of 33138545 is about 5756.6088107496. The cubic root of 33138545 is about 321.2016828926.

The spelling of 33138545 in words is "thirty-three million, one hundred thirty-eight thousand, five hundred forty-five".