6442252553 has 8 divisors (see below), whose sum is σ = 7031486880. Its totient is φ = 5853614080.

The previous prime is 6442252549. The next prime is 6442252567. The reversal of 6442252553 is 3552522446.

6442252553 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6442252553 - 2² = 6442252549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6442252543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126200 + ... + 169737.

It is an arithmetic number, because the mean of its divisors is an integer number (878935860).

Almost surely, 2^6442252553 is an apocalyptic number.

It is an amenable number.

6442252553 is a deficient number, since it is larger than the sum of its proper divisors (589234327).

6442252553 is a wasteful number, since it uses less digits than its factorization.

6442252553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297927.

The product of its digits is 288000, while the sum is 38.

The square root of 6442252553 is about 80263.6440301585. The cubic root of 6442252553 is about 1860.7123868671.

Adding to 6442252553 its reverse (3552522446), we get a palindrome (9994774999).

The spelling of 6442252553 in words is "six billion, four hundred forty-two million, two hundred fifty-two thousand, five hundred fifty-three".