6443255 has 48 divisors (see below), whose sum is σ = 10315200. Its totient is φ = 3838464.

The previous prime is 6443231. The next prime is 6443287. The reversal of 6443255 is 5523446.

It is not a de Polignac number, because 6443255 - 2⁸ = 6442999 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379007 + ... + 379023.

It is an arithmetic number, because the mean of its divisors is an integer number (214900).

Almost surely, 2^6443255 is an apocalyptic number.

6443255 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6443255 is a deficient number, since it is larger than the sum of its proper divisors (3871945).

6443255 is a wasteful number, since it uses less digits than its factorization.

6443255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 42 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 6443255 is about 2538.3567519165. The cubic root of 6443255 is about 186.0808893940.

The spelling of 6443255 in words is "six million, four hundred forty-three thousand, two hundred fifty-five".