55000000201 has 2 divisors, whose sum is σ = 55000000202. Its totient is φ = 55000000200.

The previous prime is 55000000171. The next prime is 55000000213. The reversal of 55000000201 is 10200000055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51847290000 + 3152710201 = 227700^2 + 56149^2 .

It is a cyclic number.

It is not a de Polignac number, because 55000000201 - 2²¹ = 54997903049 is a prime.

It is a super-2 number, since 2×55000000201² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55000000271) 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 as a sum of consecutive naturals, namely, 27500000100 + 27500000101.

It is an arithmetic number, because the mean of its divisors is an integer number (27500000101).

Almost surely, 2^55000000201 is an apocalyptic number.

It is an amenable number.

55000000201 is a deficient number, since it is larger than the sum of its proper divisors (1).

55000000201 is an equidigital number, since it uses as much as digits as its factorization.

55000000201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50, while the sum is 13.

Adding to 55000000201 its reverse (10200000055), we get a palindrome (65200000256).

The spelling of 55000000201 in words is "fifty-five billion, two hundred one", and thus it is an aban number.