2271139 has 4 divisors (see below), whose sum is σ = 2445856. Its totient is φ = 2096424.

The previous prime is 2271133. The next prime is 2271151. The reversal of 2271139 is 9311722.

2271139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2271139 - 2⁵ = 2271107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2271133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87339 + ... + 87364.

It is an arithmetic number, because the mean of its divisors is an integer number (611464).

2^2271139 is an apocalyptic number.

2271139 is a deficient number, since it is larger than the sum of its proper divisors (174717).

2271139 is a wasteful number, since it uses less digits than its factorization.

2271139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174716.

The product of its digits is 756, while the sum is 25.

The square root of 2271139 is about 1507.0298603545. The cubic root of 2271139 is about 131.4461604981.

The spelling of 2271139 in words is "two million, two hundred seventy-one thousand, one hundred thirty-nine".