2056559 has 4 divisors (see below), whose sum is σ = 2095416. Its totient is φ = 2017704.

The previous prime is 2056553. The next prime is 2056573. The reversal of 2056559 is 9556502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2056559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056553) 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, 19349 + ... + 19454.

It is an arithmetic number, because the mean of its divisors is an integer number (523854).

2^2056559 is an apocalyptic number.

2056559 is a deficient number, since it is larger than the sum of its proper divisors (38857).

2056559 is an equidigital number, since it uses as much as digits as its factorization.

2056559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38856.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 2056559 is about 1434.0707792853. The cubic root of 2056559 is about 127.1687466892.

The spelling of 2056559 in words is "two million, fifty-six thousand, five hundred fifty-nine".