55186828061 has 4 divisors (see below), whose sum is σ = 57586255392. Its totient is φ = 52787400732.

The previous prime is 55186828033. The next prime is 55186828079. The reversal of 55186828061 is 16082868155.

It is a happy number.

55186828061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55186828061 - 2²⁶ = 55119719197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55186828261) 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, 1199713631 + ... + 1199713676.

It is an arithmetic number, because the mean of its divisors is an integer number (14396563848).

Almost surely, 2^55186828061 is an apocalyptic number.

It is an amenable number.

55186828061 is a deficient number, since it is larger than the sum of its proper divisors (2399427331).

55186828061 is a wasteful number, since it uses less digits than its factorization.

55186828061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399427330.

The product of its (nonzero) digits is 921600, while the sum is 50.

The spelling of 55186828061 in words is "fifty-five billion, one hundred eighty-six million, eight hundred twenty-eight thousand, sixty-one".