55055512201 has 4 divisors (see below), whose sum is σ = 55056000772. Its totient is φ = 55055023632.

The previous prime is 55055512199. The next prime is 55055512271. The reversal of 55055512201 is 10221555055.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 22552830976 + 32502681225 = 150176^2 + 180285^2 .

It is a cyclic number.

It is not a de Polignac number, because 55055512201 - 2¹ = 55055512199 is a prime.

It is a super-2 number, since 2×55055512201² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55055512271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20191 + ... + 332443.

It is an arithmetic number, because the mean of its divisors is an integer number (13764000193).

Almost surely, 2^55055512201 is an apocalyptic number.

It is an amenable number.

55055512201 is a deficient number, since it is larger than the sum of its proper divisors (488571).

55055512201 is a wasteful number, since it uses less digits than its factorization.

55055512201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488570.

The product of its (nonzero) digits is 12500, while the sum is 31.

The spelling of 55055512201 in words is "fifty-five billion, fifty-five million, five hundred twelve thousand, two hundred one".