4256559 has 12 divisors (see below), whose sum is σ = 6206200. Its totient is φ = 2811024.

The previous prime is 4256537. The next prime is 4256561. The reversal of 4256559 is 9556524.

4256559 is a `hidden beast` number, since 42 + 565 + 59 = 666.

It is not a de Polignac number, because 4256559 - 2⁷ = 4256431 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 (4256509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1189 + ... + 3150.

Almost surely, 2^4256559 is an apocalyptic number.

4256559 is a deficient number, since it is larger than the sum of its proper divisors (1949641).

4256559 is a wasteful number, since it uses less digits than its factorization.

4256559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4454 (or 4451 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 4256559 is about 2063.1429906819. The cubic root of 4256559 is about 162.0638751314.

It can be divided in two parts, 42565 and 59, that added together give a palindrome (42624).

The spelling of 4256559 in words is "four million, two hundred fifty-six thousand, five hundred fifty-nine".