2271543 has 4 divisors (see below), whose sum is σ = 3028728. Its totient is φ = 1514360.

The previous prime is 2271499. The next prime is 2271551. The reversal of 2271543 is 3451722.

2271543 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 2271543 - 2⁸ = 2271287 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271553) 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, 378588 + ... + 378593.

It is an arithmetic number, because the mean of its divisors is an integer number (757182).

2^2271543 is an apocalyptic number.

2271543 is a deficient number, since it is larger than the sum of its proper divisors (757185).

2271543 is an equidigital number, since it uses as much as digits as its factorization.

2271543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757184.

The product of its digits is 1680, while the sum is 24.

The square root of 2271543 is about 1507.1638928796. The cubic root of 2271543 is about 131.4539541060.

It can be divided in two parts, 227 and 1543, that added together give a triangular number (1770 = T₅₉).

The spelling of 2271543 in words is "two million, two hundred seventy-one thousand, five hundred forty-three".