56138055255 has 12 divisors (see below), whose sum is σ = 97305962520. Its totient is φ = 29940296112.

The previous prime is 56138055221. The next prime is 56138055257. The reversal of 56138055255 is 55255083165.

It is a happy number.

56138055255 is a `hidden beast` number, since 5 + 6 + 13 + 80 + 552 + 5 + 5 = 666.

It is not a de Polignac number, because 56138055255 - 2¹⁸ = 56137793111 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct 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: 1247512339 = 56138055255 / (5 + 6 + 1 + 3 + 8 + 0 + 5 + 5 + 2 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 56138055255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56138055257) 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 11 ways as a sum of consecutive naturals, for example, 623756125 + ... + 623756214.

It is an arithmetic number, because the mean of its divisors is an integer number (8108830210).

Almost surely, 2^56138055255 is an apocalyptic number.

56138055255 is a deficient number, since it is larger than the sum of its proper divisors (41167907265).

56138055255 is a wasteful number, since it uses less digits than its factorization.

56138055255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247512350 (or 1247512347 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 45.

The spelling of 56138055255 in words is "fifty-six billion, one hundred thirty-eight million, fifty-five thousand, two hundred fifty-five".