6442533 has 12 divisors (see below), whose sum is σ = 9356620. Its totient is φ = 4271616.

The previous prime is 6442531. The next prime is 6442559. The reversal of 6442533 is 3352446.

It can be written as a sum of positive squares in 2 ways, for example, as 1633284 + 4809249 = 1278^2 + 2193^2 .

It is not a de Polignac number, because 6442533 - 2¹ = 6442531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6442497 and 6442506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118 + ... + 3591.

Almost surely, 2^6442533 is an apocalyptic number.

It is an amenable number.

6442533 is a deficient number, since it is larger than the sum of its proper divisors (2914087).

6442533 is a wasteful number, since it uses less digits than its factorization.

6442533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908 (or 3905 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 6442533 is about 2538.2145299403. The cubic root of 6442533 is about 186.0739386928.

Adding to 6442533 its reverse (3352446), we get a palindrome (9794979).

The spelling of 6442533 in words is "six million, four hundred forty-two thousand, five hundred thirty-three".