55606055550061 has 4 divisors (see below), whose sum is σ = 56367782338492. Its totient is φ = 54844328761632.

The previous prime is 55606055550011. The next prime is 55606055550109. The reversal of 55606055550061 is 16005555060655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21361673053161 + 34244382496900 = 4621869^2 + 5851870^2 .

It is a cyclic number.

It is not a de Polignac number, because 55606055550061 - 2³³ = 55597465615469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55606055549987 and 55606055550014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55606055550011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380863394106 + ... + 380863394251.

It is an arithmetic number, because the mean of its divisors is an integer number (14091945584623).

Almost surely, 2^{55606055550061} is an apocalyptic number.

It is an amenable number.

55606055550061 is a deficient number, since it is larger than the sum of its proper divisors (761726788431).

55606055550061 is an equidigital number, since it uses as much as digits as its factorization.

55606055550061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761726788430.

The product of its (nonzero) digits is 3375000, while the sum is 49.

The spelling of 55606055550061 in words is "fifty-five trillion, six hundred six billion, fifty-five million, five hundred fifty thousand, sixty-one".