4056559 has 4 divisors (see below), whose sum is σ = 4368616. Its totient is φ = 3744504.

The previous prime is 4056553. The next prime is 4056583. The reversal of 4056559 is 9556504.

It is a happy number.

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 4056559 - 2⁵ = 4056527 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 (4056553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156009 + ... + 156034.

It is an arithmetic number, because the mean of its divisors is an integer number (1092154).

Almost surely, 2^4056559 is an apocalyptic number.

4056559 is a deficient number, since it is larger than the sum of its proper divisors (312057).

4056559 is a wasteful number, since it uses less digits than its factorization.

4056559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312056.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 4056559 is about 2014.0901171497. The cubic root of 4056559 is about 159.4847880724.

Subtracting 4056559 from its reverse (9556504), we obtain a palindrome (5499945).

The spelling of 4056559 in words is "four million, fifty-six thousand, five hundred fifty-nine".