55186874 has 4 divisors (see below), whose sum is σ = 82780314. Its totient is φ = 27593436.

The previous prime is 55186871. The next prime is 55186877. The reversal of 55186874 is 47868155.

It is a happy number.

55186874 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 an emirpimes, since its reverse is a distinct semiprime: 47868155 = 5 ⋅9573631.

It is an interprime number because it is at equal distance from previous prime (55186871) and next prime (55186877).

It can be written as a sum of positive squares in only one way, i.e., 47706649 + 7480225 = 6907^2 + 2735^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55186871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13796717 + ... + 13796720.

Almost surely, 2^55186874 is an apocalyptic number.

55186874 is a deficient number, since it is larger than the sum of its proper divisors (27593440).

55186874 is a wasteful number, since it uses less digits than its factorization.

55186874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27593439.

The product of its digits is 268800, while the sum is 44.

The square root of 55186874 is about 7428.7868457777. The cubic root of 55186874 is about 380.7254700564.

The spelling of 55186874 in words is "fifty-five million, one hundred eighty-six thousand, eight hundred seventy-four".