55103 has 2 divisors, whose sum is σ = 55104. Its totient is φ = 55102.

The previous prime is 55079. The next prime is 55109. The reversal of 55103 is 30155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55103 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27551 + 27552.

It is an arithmetic number, because the mean of its divisors is an integer number (27552).

2⁵⁵¹⁰³ is an apocalyptic number.

55103 is a deficient number, since it is larger than the sum of its proper divisors (1).

55103 is an equidigital number, since it uses as much as digits as its factorization.

55103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75, while the sum is 14.

The square root of 55103 is about 234.7402820140. The cubic root of 55103 is about 38.0532494464.

Adding to 55103 its reverse (30155), we get a palindrome (85258).

It can be divided in two parts, 55 and 103, that multiplied together give a palindrome (5665).

The spelling of 55103 in words is "fifty-five thousand, one hundred three".