55556055050561 has 8 divisors (see below), whose sum is σ = 59829781460904. Its totient is φ = 51282354885120.

The previous prime is 55556055050537. The next prime is 55556055050627. The reversal of 55556055050561 is 16505055065555.

It can be written as a sum of positive squares in 4 ways, for example, as 27317671610161 + 28238383440400 = 5226631^2 + 5313980^2 .

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 55556055050561 - 2⁶ = 55556055050497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55556055050501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2049830 + ... + 10738431.

It is an arithmetic number, because the mean of its divisors is an integer number (7478722682613).

Almost surely, 2^{55556055050561} is an apocalyptic number.

It is an amenable number.

55556055050561 is a deficient number, since it is larger than the sum of its proper divisors (4273726410343).

55556055050561 is a wasteful number, since it uses less digits than its factorization.

55556055050561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13122451.

The product of its (nonzero) digits is 14062500, while the sum is 53.

The spelling of 55556055050561 in words is "fifty-five trillion, five hundred fifty-six billion, fifty-five million, fifty thousand, five hundred sixty-one".