51506256055 has 8 divisors (see below), whose sum is σ = 63938800800. Its totient is φ = 39784142496.

The previous prime is 51506256041. The next prime is 51506256119. The reversal of 51506256055 is 55065260515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51506256055 - 2⁹ = 51506255543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51506255999 and 51506256017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177607635 + ... + 177607924.

It is an arithmetic number, because the mean of its divisors is an integer number (7992350100).

Almost surely, 2^51506256055 is an apocalyptic number.

51506256055 is a deficient number, since it is larger than the sum of its proper divisors (12432544745).

51506256055 is a wasteful number, since it uses less digits than its factorization.

51506256055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355215593.

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 51506256055 in words is "fifty-one billion, five hundred six million, two hundred fifty-six thousand, fifty-five".