55112201 has 4 divisors (see below), whose sum is σ = 55222272. Its totient is φ = 55002132.

The previous prime is 55112191. The next prime is 55112207. The reversal of 55112201 is 10221155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55112201 - 2⁶ = 55112137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55112201.

It is not an unprimeable number, because it can be changed into a prime (55112207) 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 3 ways as a sum of consecutive naturals, for example, 54281 + ... + 55286.

It is an arithmetic number, because the mean of its divisors is an integer number (13805568).

Almost surely, 2^55112201 is an apocalyptic number.

It is an amenable number.

55112201 is a deficient number, since it is larger than the sum of its proper divisors (110071).

55112201 is a wasteful number, since it uses less digits than its factorization.

55112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110070.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 55112201 is about 7423.7592229274. The cubic root of 55112201 is about 380.5536734957.

Adding to 55112201 its reverse (10221155), we get a palindrome (65333356).

The spelling of 55112201 in words is "fifty-five million, one hundred twelve thousand, two hundred one".