55055045503 has 4 divisors (see below), whose sum is σ = 55055554848. Its totient is φ = 55054536160.

The previous prime is 55055045443. The next prime is 55055045527. The reversal of 55055045503 is 30554055055.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55055045503 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 (55055045203) 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, 21178 + ... + 332503.

It is an arithmetic number, because the mean of its divisors is an integer number (13763888712).

Almost surely, 2^55055045503 is an apocalyptic number.

55055045503 is a deficient number, since it is larger than the sum of its proper divisors (509345).

55055045503 is a wasteful number, since it uses less digits than its factorization.

55055045503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509344.

The product of its (nonzero) digits is 187500, while the sum is 37.

The spelling of 55055045503 in words is "fifty-five billion, fifty-five million, forty-five thousand, five hundred three".