55223118 has 12 divisors (see below), whose sum is σ = 119650128. Its totient is φ = 18407700.

The previous prime is 55223107. The next prime is 55223143. The reversal of 55223118 is 81132255.

It is a happy number.

55223118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55223091 and 55223100.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1533958 + ... + 1533993.

It is an arithmetic number, because the mean of its divisors is an integer number (9970844).

Almost surely, 2^55223118 is an apocalyptic number.

55223118 is an abundant number, since it is smaller than the sum of its proper divisors (64427010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55223118 is a wasteful number, since it uses less digits than its factorization.

55223118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067959 (or 3067956 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 55223118 is about 7431.2258746454. The cubic root of 55223118 is about 380.8087990149.

The spelling of 55223118 in words is "fifty-five million, two hundred twenty-three thousand, one hundred eighteen".