4431120553 has 4 divisors (see below), whose sum is σ = 4436174020. Its totient is φ = 4426067088.

The previous prime is 4431120541. The next prime is 4431120557. The reversal of 4431120553 is 3550211344.

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 1589377689 + 2841742864 = 39867^2 + 53308^2 .

It is a cyclic number.

It is not a de Polignac number, because 4431120553 - 2⁹ = 4431120041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4431120557) 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, 2525418 + ... + 2527171.

It is an arithmetic number, because the mean of its divisors is an integer number (1109043505).

Almost surely, 2^4431120553 is an apocalyptic number.

It is an amenable number.

4431120553 is a deficient number, since it is larger than the sum of its proper divisors (5053467).

4431120553 is an equidigital number, since it uses as much as digits as its factorization.

4431120553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053466.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 4431120553 is about 66566.6624745450. The cubic root of 4431120553 is about 1642.4967612356.

Adding to 4431120553 its reverse (3550211344), we get a palindrome (7981331897).

The spelling of 4431120553 in words is "four billion, four hundred thirty-one million, one hundred twenty thousand, five hundred fifty-three".