51371355443 has 4 divisors (see below), whose sum is σ = 51372418608. Its totient is φ = 51370292280.

The previous prime is 51371355437. The next prime is 51371355521. The reversal of 51371355443 is 34455317315.

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 51371355443 - 2⁶ = 51371355379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51371355443.

It is not an unprimeable number, because it can be changed into a prime (51371351443) 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, 455471 + ... + 556952.

It is an arithmetic number, because the mean of its divisors is an integer number (12843104652).

Almost surely, 2^51371355443 is an apocalyptic number.

51371355443 is a deficient number, since it is larger than the sum of its proper divisors (1063165).

51371355443 is a wasteful number, since it uses less digits than its factorization.

51371355443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063164.

The product of its digits is 378000, while the sum is 41.

The spelling of 51371355443 in words is "fifty-one billion, three hundred seventy-one million, three hundred fifty-five thousand, four hundred forty-three".