55203201 has 10 divisors (see below), whose sum is σ = 82464162. Its totient is φ = 36802080.

The previous prime is 55203193. The next prime is 55203221. The reversal of 55203201 is 10230255.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46908801 + 8294400 = 6849^2 + 2880^2 .

It is not a de Polignac number, because 55203201 - 2³ = 55203193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55203221) 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 9 ways as a sum of consecutive naturals, for example, 340680 + ... + 340841.

Almost surely, 2^55203201 is an apocalyptic number.

It is an amenable number.

55203201 is a deficient number, since it is larger than the sum of its proper divisors (27260961).

55203201 is an equidigital number, since it uses as much as digits as its factorization.

55203201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681533 (or 681524 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 55203201 is about 7429.8856653383. The cubic root of 55203201 is about 380.7630121468.

Adding to 55203201 its reverse (10230255), we get a palindrome (65433456).

The spelling of 55203201 in words is "fifty-five million, two hundred three thousand, two hundred one".