55186841 has 4 divisors (see below), whose sum is σ = 55240500. Its totient is φ = 55133184.

The previous prime is 55186829. The next prime is 55186871. The reversal of 55186841 is 14868155.

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 51423241 + 3763600 = 7171^2 + 1940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55186841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55186795 and 55186804.

It is not an unprimeable number, because it can be changed into a prime (55186871) 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, 25256 + ... + 27353.

It is an arithmetic number, because the mean of its divisors is an integer number (13810125).

Almost surely, 2^55186841 is an apocalyptic number.

It is an amenable number.

55186841 is a deficient number, since it is larger than the sum of its proper divisors (53659).

55186841 is a wasteful number, since it uses less digits than its factorization.

55186841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53658.

The product of its digits is 38400, while the sum is 38.

The square root of 55186841 is about 7428.7846246879. The cubic root of 55186841 is about 380.7253941691.

The spelling of 55186841 in words is "fifty-five million, one hundred eighty-six thousand, eight hundred forty-one".