2256001 has 16 divisors (see below), whose sum is σ = 2648448. Its totient is φ = 1900800.

The previous prime is 2255999. The next prime is 2256013. The reversal of 2256001 is 1006522.

It is a happy number.

It is not a de Polignac number, because 2256001 - 2¹ = 2255999 is a prime.

2256001 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2256031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9241 + ... + 9481.

It is an arithmetic number, because the mean of its divisors is an integer number (165528).

2^2256001 is an apocalyptic number.

It is an amenable number.

2256001 is a deficient number, since it is larger than the sum of its proper divisors (392447).

2256001 is a wasteful number, since it uses less digits than its factorization.

2256001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2256001 is about 1501.9990013312. Note that the first 3 decimals coincide. The cubic root of 2256001 is about 131.1534631019.

It can be divided in two parts, 225 and 6001, that added together give a palindrome (6226).

The spelling of 2256001 in words is "two million, two hundred fifty-six thousand, one".