2144455 has 16 divisors (see below), whose sum is σ = 2678400. Its totient is φ = 1647360.

The previous prime is 2144449. The next prime is 2144459. The reversal of 2144455 is 5544412.

It is a happy number.

It is not a de Polignac number, because 2144455 - 2⁹ = 2143943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144459) 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, 24051 + ... + 24139.

It is an arithmetic number, because the mean of its divisors is an integer number (167400).

2^2144455 is an apocalyptic number.

2144455 is a deficient number, since it is larger than the sum of its proper divisors (533945).

2144455 is an equidigital number, since it uses as much as digits as its factorization.

2144455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its digits is 3200, while the sum is 25.

The square root of 2144455 is about 1464.3957798355. The cubic root of 2144455 is about 128.9552355547.

Adding to 2144455 its reverse (5544412), we get a palindrome (7688867).

The spelling of 2144455 in words is "two million, one hundred forty-four thousand, four hundred fifty-five".