55003203 has 12 divisors (see below), whose sum is σ = 80569008. Its totient is φ = 36151920.

The previous prime is 55003199. The next prime is 55003213. The reversal of 55003203 is 30230055.

It is not a de Polignac number, because 55003203 - 2² = 55003199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55003213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42400 + ... + 43677.

It is an arithmetic number, because the mean of its divisors is an integer number (6714084).

Almost surely, 2^55003203 is an apocalyptic number.

55003203 is a deficient number, since it is larger than the sum of its proper divisors (25565805).

55003203 is a wasteful number, since it uses less digits than its factorization.

55003203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86154 (or 86151 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 55003203 is about 7416.4144301677. The cubic root of 55003203 is about 380.3026282703.

Adding to 55003203 its reverse (30230055), we get a palindrome (85233258).

The spelling of 55003203 in words is "fifty-five million, three thousand, two hundred three".