55112155 has 16 divisors (see below), whose sum is σ = 75741120. Its totient is φ = 37711872.

The previous prime is 55112149. The next prime is 55112191. The reversal of 55112155 is 55121155.

It is a cyclic number.

It is not a de Polignac number, because 55112155 - 2¹⁷ = 54981083 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18831 + ... + 21559.

It is an arithmetic number, because the mean of its divisors is an integer number (4733820).

Almost surely, 2^55112155 is an apocalyptic number.

55112155 is a deficient number, since it is larger than the sum of its proper divisors (20628965).

55112155 is a wasteful number, since it uses less digits than its factorization.

55112155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its digits is 1250, while the sum is 25.

The square root of 55112155 is about 7423.7561247660. The cubic root of 55112155 is about 380.5535676179.

The spelling of 55112155 in words is "fifty-five million, one hundred twelve thousand, one hundred fifty-five".