55031103 has 16 divisors (see below), whose sum is σ = 82447200. Its totient is φ = 36273600.

The previous prime is 55031101. The next prime is 55031147. The reversal of 55031103 is 30113055.

It is a happy number.

55031103 is a `hidden beast` number, since 550 + 3 + 110 + 3 = 666.

It is not a de Polignac number, because 55031103 - 2¹ = 55031101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55031101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9048 + ... + 13853.

It is an arithmetic number, because the mean of its divisors is an integer number (5152950).

Almost surely, 2^55031103 is an apocalyptic number.

55031103 is a deficient number, since it is larger than the sum of its proper divisors (27416097).

55031103 is a wasteful number, since it uses less digits than its factorization.

55031103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22999 (or 22993 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 55031103 is about 7418.2951545487. The cubic root of 55031103 is about 380.3669193735.

Adding to 55031103 its reverse (30113055), we get a palindrome (85144158).

The spelling of 55031103 in words is "fifty-five million, thirty-one thousand, one hundred three".