51445307310552 has 96 divisors (see below), whose sum is σ = 143149548278880. Its totient is φ = 16678807649280.

The previous prime is 51445307310461. The next prime is 51445307310557. The reversal of 51445307310552 is 25501370354415.

51445307310552 is a `hidden beast` number, since 5 + 1 + 4 + 4 + 530 + 7 + 3 + 105 + 5 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 51445307310498 and 51445307310507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51445307310557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3660448 + ... + 10783760.

It is an arithmetic number, because the mean of its divisors is an integer number (1491141127905).

Almost surely, 2^{51445307310552} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51445307310552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71574774139440).

51445307310552 is an abundant number, since it is smaller than the sum of its proper divisors (91704240968328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51445307310552 is a wasteful number, since it uses less digits than its factorization.

51445307310552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7126073 (or 7126066 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 45.

Adding to 51445307310552 its reverse (25501370354415), we get a palindrome (76946677664967).

The spelling of 51445307310552 in words is "fifty-one trillion, four hundred forty-five billion, three hundred seven million, three hundred ten thousand, five hundred fifty-two".