51772056705 has 12 divisors (see below), whose sum is σ = 89738231700. Its totient is φ = 27611763552.

The previous prime is 51772056667. The next prime is 51772056709. The reversal of 51772056705 is 50765027715.

It is a happy number.

51772056705 is a `hidden beast` number, since 5 + 17 + 72 + 0 + 567 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20976018561 + 30796038144 = 144831^2 + 175488^2 .

It is not a de Polignac number, because 51772056705 - 2⁶ = 51772056641 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1150490149 = 51772056705 / (5 + 1 + 7 + 7 + 2 + 0 + 5 + 6 + 7 + 0 + 5).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51772056709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 575245030 + ... + 575245119.

It is an arithmetic number, because the mean of its divisors is an integer number (7478185975).

Almost surely, 2^51772056705 is an apocalyptic number.

It is an amenable number.

51772056705 is a deficient number, since it is larger than the sum of its proper divisors (37966174995).

51772056705 is a wasteful number, since it uses less digits than its factorization.

51772056705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150490160 (or 1150490157 counting only the distinct ones).

The product of its (nonzero) digits is 514500, while the sum is 45.

The spelling of 51772056705 in words is "fifty-one billion, seven hundred seventy-two million, fifty-six thousand, seven hundred five".