55103443501 has 4 divisors (see below), whose sum is σ = 55106855100. Its totient is φ = 55100031904.

The previous prime is 55103443481. The next prime is 55103443537. The reversal of 55103443501 is 10534430155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10534430155 = 5 ⋅2106886031.

It can be written as a sum of positive squares in 2 ways, for example, as 25824811401 + 29278632100 = 160701^2 + 171110^2 .

It is a cyclic number.

It is not a de Polignac number, because 55103443501 - 2³¹ = 52955959853 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 (55103446501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1681456 + ... + 1713913.

It is an arithmetic number, because the mean of its divisors is an integer number (13776713775).

Almost surely, 2^55103443501 is an apocalyptic number.

It is an amenable number.

55103443501 is a deficient number, since it is larger than the sum of its proper divisors (3411599).

55103443501 is a wasteful number, since it uses less digits than its factorization.

55103443501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411598.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 55103443501 its reverse (10534430155), we get a palindrome (65637873656).

The spelling of 55103443501 in words is "fifty-five billion, one hundred three million, four hundred forty-three thousand, five hundred one".