33139171 has 16 divisors (see below), whose sum is σ = 38150784. Its totient is φ = 28514304.

The previous prime is 33139163. The next prime is 33139213. The reversal of 33139171 is 17193133.

It is not a de Polignac number, because 33139171 - 2³ = 33139163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33139121) 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, 24310 + ... + 25636.

It is an arithmetic number, because the mean of its divisors is an integer number (2384424).

Almost surely, 2^33139171 is an apocalyptic number.

33139171 is a deficient number, since it is larger than the sum of its proper divisors (5011613).

33139171 is a wasteful number, since it uses less digits than its factorization.

33139171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470.

The product of its digits is 1701, while the sum is 28.

The square root of 33139171 is about 5756.6631827822. The cubic root of 33139171 is about 321.2037054215.

The spelling of 33139171 in words is "thirty-three million, one hundred thirty-nine thousand, one hundred seventy-one".