2440255 has 4 divisors (see below), whose sum is σ = 2928312.
Its totient is φ = 1952200.
The previous prime is 2440253. The next prime is 2440259. The reversal of 2440255 is 5520442.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5520442 = 2 ⋅2760221.
It is not a de Polignac number, because 2440255 - 21 = 2440253 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 (2440253) 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 3 ways as a sum of consecutive naturals, for example, 244021 + ... + 244030.
It is an arithmetic number, because the mean of its divisors is an integer number (732078).
22440255 is an apocalyptic number.
2440255 is a deficient number, since it is larger than the sum of its proper divisors (488057).
2440255 is an equidigital number, since it uses as much as digits as its factorization.
2440255 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 488056.
The product of its (nonzero) digits is 1600, while the sum is 22.
The square root of 2440255 is about 1562.1315565598.
The cubic root of 2440255 is about 134.6309996329.
Adding to 2440255 its reverse (5520442), we get a palindrome (7960697).
The spelling of 2440255 in words is "two million, four hundred forty thousand, two hundred fifty-five".