2259558 has 48 divisors (see below), whose sum is σ = 5690880. Its totient is φ = 634608.

The previous prime is 2259557. The next prime is 2259571. The reversal of 2259558 is 8559522.

2259558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2259557) 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 23 ways as a sum of consecutive naturals, for example, 9841 + ... + 10067.

It is an arithmetic number, because the mean of its divisors is an integer number (118560).

2^2259558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2259558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2845440).

2259558 is an abundant number, since it is smaller than the sum of its proper divisors (3431322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2259558 is a wasteful number, since it uses less digits than its factorization.

2259558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 318 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 2259558 is about 1503.1826236356. The cubic root of 2259558 is about 131.2223560828. Note that the first 3 decimals are identical.

Subtracting from 2259558 its sum of digits (36), we obtain a palindrome (2259522).

It can be divided in two parts, 2 and 259558, that added together give a triangular number (259560 = T₇₂₀).

The spelling of 2259558 in words is "two million, two hundred fifty-nine thousand, five hundred fifty-eight".