2159256 has 32 divisors (see below), whose sum is σ = 5889600. Its totient is φ = 654240.

The previous prime is 2159251. The next prime is 2159281. The reversal of 2159256 is 6529512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3826 + ... + 4353.

It is an arithmetic number, because the mean of its divisors is an integer number (184050).

2^2159256 is an apocalyptic number.

It is an amenable number.

2159256 is an abundant number, since it is smaller than the sum of its proper divisors (3730344).

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

2159256 is a wasteful number, since it uses less digits than its factorization.

2159256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8199 (or 8195 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 2159256 is about 1469.4407099301. The cubic root of 2159256 is about 129.2512380363.

It can be divided in two parts, 2159 and 256, that added together give a triangular number (2415 = T₆₉).

The spelling of 2159256 in words is "two million, one hundred fifty-nine thousand, two hundred fifty-six".