55520011103 has 4 divisors (see below), whose sum is σ = 55520483760. Its totient is φ = 55519538448.

The previous prime is 55520011097. The next prime is 55520011109. The reversal of 55520011103 is 30111002555.

It is a happy number.

55520011103 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, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (55520011097) and next prime (55520011109).

It is a cyclic number.

It is not a de Polignac number, because 55520011103 - 2⁶ = 55520011039 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 (55520011109) 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, 90878 + ... + 345396.

It is an arithmetic number, because the mean of its divisors is an integer number (13880120940).

Almost surely, 2^55520011103 is an apocalyptic number.

55520011103 is a deficient number, since it is larger than the sum of its proper divisors (472657).

55520011103 is a wasteful number, since it uses less digits than its factorization.

55520011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472656.

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 55520011103 its reverse (30111002555), we get a palindrome (85631013658).

The spelling of 55520011103 in words is "fifty-five billion, five hundred twenty million, eleven thousand, one hundred three".