55500550503 has 8 divisors (see below), whose sum is σ = 74171638128. Its totient is φ = 36914914944.

The previous prime is 55500550477. The next prime is 55500550507. The reversal of 55500550503 is 30505500555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55500550503 - 2²⁰ = 55499501927 is a prime.

It is a super-3 number, since 3×55500550503³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55500550507) 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 7 ways as a sum of consecutive naturals, for example, 21361500 + ... + 21364097.

It is an arithmetic number, because the mean of its divisors is an integer number (9271454766).

Almost surely, 2^55500550503 is an apocalyptic number.

55500550503 is a deficient number, since it is larger than the sum of its proper divisors (18671087625).

55500550503 is a wasteful number, since it uses less digits than its factorization.

55500550503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42726033.

The product of its (nonzero) digits is 46875, while the sum is 33.

The spelling of 55500550503 in words is "fifty-five billion, five hundred million, five hundred fifty thousand, five hundred three".