55320326203 has 4 divisors (see below), whose sum is σ = 55320837760. Its totient is φ = 55319814648.

The previous prime is 55320326197. The next prime is 55320326219. The reversal of 55320326203 is 30262302355.

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, and also an emirpimes, since its reverse is a distinct semiprime: 30262302355 = 5 ⋅6052460471.

It is a cyclic number.

It is not a de Polignac number, because 55320326203 - 2¹⁷ = 55320195131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55320326003) 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 3 ways as a sum of consecutive naturals, for example, 22875 + ... + 333412.

It is an arithmetic number, because the mean of its divisors is an integer number (13830209440).

Almost surely, 2^55320326203 is an apocalyptic number.

55320326203 is a deficient number, since it is larger than the sum of its proper divisors (511557).

55320326203 is a wasteful number, since it uses less digits than its factorization.

55320326203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511556.

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 55320326203 its reverse (30262302355), we get a palindrome (85582628558).

The spelling of 55320326203 in words is "fifty-five billion, three hundred twenty million, three hundred twenty-six thousand, two hundred three".