6441455 has 4 divisors (see below), whose sum is σ = 7729752. Its totient is φ = 5153160.

The previous prime is 6441439. The next prime is 6441467. The reversal of 6441455 is 5541446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5541446 = 2 ⋅2770723.

It is not a de Polignac number, because 6441455 - 2⁴ = 6441439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 644141 + ... + 644150.

It is an arithmetic number, because the mean of its divisors is an integer number (1932438).

Almost surely, 2^6441455 is an apocalyptic number.

6441455 is a deficient number, since it is larger than the sum of its proper divisors (1288297).

6441455 is a wasteful number, since it uses less digits than its factorization.

6441455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288296.

The product of its digits is 9600, while the sum is 29.

The square root of 6441455 is about 2538.0021670598. The cubic root of 6441455 is about 186.0635598095.

Subtracting from 6441455 its reverse (5541446), we obtain a palindrome (900009).

The spelling of 6441455 in words is "six million, four hundred forty-one thousand, four hundred fifty-five".