55248787 has 4 divisors (see below), whose sum is σ = 60271416. Its totient is φ = 50226160.

The previous prime is 55248779. The next prime is 55248811. The reversal of 55248787 is 78784255.

55248787 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.

It is a cyclic number.

It is not a de Polignac number, because 55248787 - 2³ = 55248779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55248757) 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 in 3 ways as a sum of consecutive naturals, for example, 2511298 + ... + 2511319.

It is an arithmetic number, because the mean of its divisors is an integer number (15067854).

Almost surely, 2^55248787 is an apocalyptic number.

55248787 is a deficient number, since it is larger than the sum of its proper divisors (5022629).

55248787 is a wasteful number, since it uses less digits than its factorization.

55248787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5022628.

The product of its digits is 627200, while the sum is 46.

The square root of 55248787 is about 7432.9527780015. The cubic root of 55248787 is about 380.8677928280.

It can be divided in two parts, 55 and 248787, that added together give a palindrome (248842).

The spelling of 55248787 in words is "fifty-five million, two hundred forty-eight thousand, seven hundred eighty-seven".