51755545655 has 16 divisors (see below), whose sum is σ = 68168386944. Its totient is φ = 37409467680.

The previous prime is 51755545619. The next prime is 51755545697. The reversal of 51755545655 is 55654555715.

It is not a de Polignac number, because 51755545655 - 2²⁰ = 51754497079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51755545597 and 51755545606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2877569 + ... + 2895498.

It is an arithmetic number, because the mean of its divisors is an integer number (4260524184).

Almost surely, 2^51755545655 is an apocalyptic number.

51755545655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51755545655 is a deficient number, since it is larger than the sum of its proper divisors (16412841289).

51755545655 is a wasteful number, since it uses less digits than its factorization.

51755545655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773246.

The product of its digits is 13125000, while the sum is 53.

The spelling of 51755545655 in words is "fifty-one billion, seven hundred fifty-five million, five hundred forty-five thousand, six hundred fifty-five".