55021118 has 8 divisors (see below), whose sum is σ = 83134512. Its totient is φ = 27309616.

The previous prime is 55021117. The next prime is 55021151. The reversal of 55021118 is 81112055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×55021118³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55021093 and 55021102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55021111) 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, 100130 + ... + 100677.

It is an arithmetic number, because the mean of its divisors is an integer number (10391814).

Almost surely, 2^55021118 is an apocalyptic number.

55021118 is a deficient number, since it is larger than the sum of its proper divisors (28113394).

55021118 is a wasteful number, since it uses less digits than its factorization.

55021118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200946.

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 55021118 is about 7417.6221257220. The cubic root of 55021118 is about 380.3439130297.

The spelling of 55021118 in words is "fifty-five million, twenty-one thousand, one hundred eighteen".