51445232143 has 8 divisors (see below), whose sum is σ = 54155534720. Its totient is φ = 48735195480.

The previous prime is 51445232131. The next prime is 51445232171. The reversal of 51445232143 is 34123254415.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51445232143 is a prime.

It is a super-2 number, since 2×51445232143² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51445232099 and 51445232108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51445232173) 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, 423196 + ... + 531022.

It is an arithmetic number, because the mean of its divisors is an integer number (6769441840).

Almost surely, 2^51445232143 is an apocalyptic number.

51445232143 is a deficient number, since it is larger than the sum of its proper divisors (2710302577).

51445232143 is a wasteful number, since it uses less digits than its factorization.

51445232143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132957.

The product of its digits is 57600, while the sum is 34.

Adding to 51445232143 its reverse (34123254415), we get a palindrome (85568486558).

The spelling of 51445232143 in words is "fifty-one billion, four hundred forty-five million, two hundred thirty-two thousand, one hundred forty-three".