6442255 has 16 divisors (see below), whose sum is σ = 8043840. Its totient is φ = 4948992.

The previous prime is 6442237. The next prime is 6442259. The reversal of 6442255 is 5522446.

6442255 is a nontrivial binomial coefficient, being equal to C(3590, 2).

It is a cyclic number.

It is not a de Polignac number, because 6442255 - 2⁵ = 6442223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17766 + ... + 18124.

It is an arithmetic number, because the mean of its divisors is an integer number (502740).

Almost surely, 2^6442255 is an apocalyptic number.

6442255 is the 3589-th triangular number and also the 1795-th hexagonal number.

6442255 is the 1197-th centered nonagonal number.

6442255 is a deficient number, since it is larger than the sum of its proper divisors (1601585).

6442255 is a wasteful number, since it uses less digits than its factorization.

6442255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498.

The product of its digits is 9600, while the sum is 28.

The square root of 6442255 is about 2538.1597664450. The cubic root of 6442255 is about 186.0712622456.

The spelling of 6442255 in words is "six million, four hundred forty-two thousand, two hundred fifty-five".