51055134443 has 4 divisors (see below), whose sum is σ = 51314297760. Its totient is φ = 50795971128.

The previous prime is 51055134439. The next prime is 51055134469. The reversal of 51055134443 is 34443155015.

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

It is a cyclic number.

It is not a de Polignac number, because 51055134443 - 2² = 51055134439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51055134413) 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, 129581363 + ... + 129581756.

It is an arithmetic number, because the mean of its divisors is an integer number (12828574440).

Almost surely, 2^51055134443 is an apocalyptic number.

51055134443 is a deficient number, since it is larger than the sum of its proper divisors (259163317).

51055134443 is a wasteful number, since it uses less digits than its factorization.

51055134443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259163316.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 51055134443 its reverse (34443155015), we get a palindrome (85498289458).

The spelling of 51055134443 in words is "fifty-one billion, fifty-five million, one hundred thirty-four thousand, four hundred forty-three".