6442110253 has 4 divisors (see below), whose sum is σ = 6446607228. Its totient is φ = 6437613280.

The previous prime is 6442110251. The next prime is 6442110277. The reversal of 6442110253 is 3520112446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5753677609 + 688432644 = 75853^2 + 26238^2 .

It is a cyclic number.

It is not a de Polignac number, because 6442110253 - 2¹ = 6442110251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442110251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246338 + ... + 2249203.

It is an arithmetic number, because the mean of its divisors is an integer number (1611651807).

Almost surely, 2^6442110253 is an apocalyptic number.

It is an amenable number.

6442110253 is a deficient number, since it is larger than the sum of its proper divisors (4496975).

6442110253 is a wasteful number, since it uses less digits than its factorization.

6442110253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496974.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 6442110253 is about 80262.7575716160. The cubic root of 6442110253 is about 1860.6986866217.

Adding to 6442110253 its reverse (3520112446), we get a palindrome (9962222699).

The spelling of 6442110253 in words is "six billion, four hundred forty-two million, one hundred ten thousand, two hundred fifty-three".