51115542255 has 24 divisors (see below), whose sum is σ = 88647773760. Its totient is φ = 27247007040.

The previous prime is 51115542221. The next prime is 51115542271. The reversal of 51115542255 is 55224551115.

51115542255 is a `hidden beast` number, since 51 + 1 + 1 + 554 + 2 + 2 + 55 = 666.

It is not a de Polignac number, because 51115542255 - 2¹⁶ = 51115476719 is a prime.

It is a super-2 number, since 2×51115542255² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219360 + ... + 387749.

It is an arithmetic number, because the mean of its divisors is an integer number (3693657240).

Almost surely, 2^51115542255 is an apocalyptic number.

51115542255 is a deficient number, since it is larger than the sum of its proper divisors (37532231505).

51115542255 is a wasteful number, since it uses less digits than its factorization.

51115542255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608991 (or 608988 counting only the distinct ones).

The product of its digits is 50000, while the sum is 36.

The spelling of 51115542255 in words is "fifty-one billion, one hundred fifteen million, five hundred forty-two thousand, two hundred fifty-five".