2143559 has 4 divisors (see below), whose sum is σ = 2338440. Its totient is φ = 1948680.

The previous prime is 2143543. The next prime is 2143567. The reversal of 2143559 is 9553412.

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 2143559 - 2⁴ = 2143543 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 1 + 4³ + 3⁵ + 5 + 5⁹ + 9⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97424 + ... + 97445.

It is an arithmetic number, because the mean of its divisors is an integer number (584610).

2^2143559 is an apocalyptic number.

2143559 is a deficient number, since it is larger than the sum of its proper divisors (194881).

2143559 is a wasteful number, since it uses less digits than its factorization.

2143559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194880.

The product of its digits is 5400, while the sum is 29.

The square root of 2143559 is about 1464.0898196491. The cubic root of 2143559 is about 128.9372729508.

It can be divided in two parts, 214 and 3559, that added together give a palindrome (3773).

The spelling of 2143559 in words is "two million, one hundred forty-three thousand, five hundred fifty-nine".