6442253 has 4 divisors (see below), whose sum is σ = 6462048. Its totient is φ = 6422460.

The previous prime is 6442237. The next prime is 6442259. The reversal of 6442253 is 3522446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6442253 - 2⁴ = 6442237 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9401 + ... + 10062.

It is an arithmetic number, because the mean of its divisors is an integer number (1615512).

Almost surely, 2^6442253 is an apocalyptic number.

It is an amenable number.

6442253 is a deficient number, since it is larger than the sum of its proper divisors (19795).

6442253 is a wasteful number, since it uses less digits than its factorization.

6442253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19794.

The product of its digits is 5760, while the sum is 26.

The square root of 6442253 is about 2538.1593724587. The cubic root of 6442253 is about 186.0712429903.

Adding to 6442253 its reverse (3522446), we get a palindrome (9964699).

The spelling of 6442253 in words is "six million, four hundred forty-two thousand, two hundred fifty-three".