51445255671 has 6 divisors (see below), whose sum is σ = 74309813760. Its totient is φ = 34296837108.

The previous prime is 51445255661. The next prime is 51445255753. The reversal of 51445255671 is 17655254415.

51445255671 is a `hidden beast` number, since 5 + 1 + 4 + 4 + 525 + 56 + 71 = 666.

It is not a de Polignac number, because 51445255671 - 2⁵ = 51445255639 is a prime.

It is a super-2 number, since 2×51445255671² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51445255651) 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, 2858069751 + ... + 2858069768.

It is an arithmetic number, because the mean of its divisors is an integer number (12384968960).

Almost surely, 2^51445255671 is an apocalyptic number.

51445255671 is a deficient number, since it is larger than the sum of its proper divisors (22864558089).

51445255671 is a wasteful number, since it uses less digits than its factorization.

51445255671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5716139525 (or 5716139522 counting only the distinct ones).

The product of its digits is 840000, while the sum is 45.

The spelling of 51445255671 in words is "fifty-one billion, four hundred forty-five million, two hundred fifty-five thousand, six hundred seventy-one".