51245500023171 has 6 divisors (see below), whose sum is σ = 74021277811260. Its totient is φ = 34163666682108.

The previous prime is 51245500023149. The next prime is 51245500023203. The reversal of 51245500023171 is 17132000554215.

51245500023171 is a `hidden beast` number, since 5 + 1 + 2 + 4 + 550 + 0 + 0 + 2 + 31 + 71 = 666.

It is not a de Polignac number, because 51245500023171 - 2⁷ = 51245500023043 is a prime.

It is a super-2 number, since 2×51245500023171² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51245500023101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2846972223501 + ... + 2846972223518.

It is an arithmetic number, because the mean of its divisors is an integer number (12336879635210).

Almost surely, 2^{51245500023171} is an apocalyptic number.

51245500023171 is a deficient number, since it is larger than the sum of its proper divisors (22775777788089).

51245500023171 is a wasteful number, since it uses less digits than its factorization.

51245500023171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5693944447025 (or 5693944447022 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

Adding to 51245500023171 its reverse (17132000554215), we get a palindrome (68377500577386).

The spelling of 51245500023171 in words is "fifty-one trillion, two hundred forty-five billion, five hundred million, twenty-three thousand, one hundred seventy-one".