55505500050051 has 64 divisors (see below), whose sum is σ = 84335778508800. Its totient is φ = 36068101977600.

The previous prime is 55505500049981. The next prime is 55505500050059. The reversal of 55505500050051 is 15005000550555.

It is a happy number.

55505500050051 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 550 + 0 + 0 + 50 + 0 + 51 = 666.

It is not a de Polignac number, because 55505500050051 - 2⁹ = 55505500049539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55505500049988 and 55505500050015.

It is not an unprimeable number, because it can be changed into a prime (55505500050059) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96882606 + ... + 97453836.

It is an arithmetic number, because the mean of its divisors is an integer number (1317746539200).

Almost surely, 2^{55505500050051} is an apocalyptic number.

55505500050051 is a deficient number, since it is larger than the sum of its proper divisors (28830278458749).

55505500050051 is a wasteful number, since it uses less digits than its factorization.

55505500050051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571817 (or 571811 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 55505500050051 in words is "fifty-five trillion, five hundred five billion, five hundred million, fifty thousand, fifty-one".