55161103 has 4 divisors (see below), whose sum is σ = 57063240. Its totient is φ = 53258968.

The previous prime is 55161091. The next prime is 55161109. The reversal of 55161103 is 30116155.

55161103 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 55161103 - 2²⁵ = 21606671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55161109) 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, 951025 + ... + 951082.

It is an arithmetic number, because the mean of its divisors is an integer number (14265810).

Almost surely, 2^55161103 is an apocalyptic number.

55161103 is a deficient number, since it is larger than the sum of its proper divisors (1902137).

55161103 is a wasteful number, since it uses less digits than its factorization.

55161103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902136.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 55161103 is about 7427.0521069937. The cubic root of 55161103 is about 380.6661974852. Note that the first 3 decimals are identical.

Adding to 55161103 its reverse (30116155), we get a palindrome (85277258).

The spelling of 55161103 in words is "fifty-five million, one hundred sixty-one thousand, one hundred three".