2259945 has 12 divisors (see below), whose sum is σ = 3917316. Its totient is φ = 1205280.

The previous prime is 2259937. The next prime is 2259949. The reversal of 2259945 is 5499522.

It is a happy number.

2259945 is a `hidden beast` number, since 22 + 599 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 549081 + 1710864 = 741^2 + 1308^2 .

It is not a de Polignac number, because 2259945 - 2³ = 2259937 is a prime.

2259945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2259949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25066 + ... + 25155.

It is an arithmetic number, because the mean of its divisors is an integer number (326443).

2^2259945 is an apocalyptic number.

It is an amenable number.

2259945 is a deficient number, since it is larger than the sum of its proper divisors (1657371).

2259945 is a wasteful number, since it uses less digits than its factorization.

2259945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50232 (or 50229 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 2259945 is about 1503.3113449981. The cubic root of 2259945 is about 131.2298472459.

The spelling of 2259945 in words is "two million, two hundred fifty-nine thousand, nine hundred forty-five".