51256546055 has 32 divisors (see below), whose sum is σ = 72976534848. Its totient is φ = 34069248000.

The previous prime is 51256546051. The next prime is 51256546073. The reversal of 51256546055 is 55064565215.

It is not a de Polignac number, because 51256546055 - 2² = 51256546051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51256545997 and 51256546015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51256546051) 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 31 ways as a sum of consecutive naturals, for example, 282674 + ... + 427103.

It is an arithmetic number, because the mean of its divisors is an integer number (2280516714).

Almost surely, 2^51256546055 is an apocalyptic number.

51256546055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51256546055 is a deficient number, since it is larger than the sum of its proper divisors (21719988793).

51256546055 is a wasteful number, since it uses less digits than its factorization.

51256546055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709907.

The product of its (nonzero) digits is 900000, while the sum is 44.

The spelling of 51256546055 in words is "fifty-one billion, two hundred fifty-six million, five hundred forty-six thousand, fifty-five".