55271101 has 2 divisors, whose sum is σ = 55271102. Its totient is φ = 55271100.

The previous prime is 55271089. The next prime is 55271123. The reversal of 55271101 is 10117255.

It is an a-pointer prime, because the next prime (55271123) can be obtained adding 55271101 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40068900 + 15202201 = 6330^2 + 3899^2 .

It is a cyclic number.

It is not a de Polignac number, because 55271101 - 2⁷ = 55270973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55271501) 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, 27635550 + 27635551.

It is an arithmetic number, because the mean of its divisors is an integer number (27635551).

Almost surely, 2^55271101 is an apocalyptic number.

It is an amenable number.

55271101 is a deficient number, since it is larger than the sum of its proper divisors (1).

55271101 is an equidigital number, since it uses as much as digits as its factorization.

55271101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 55271101 is about 7434.4536450233. The cubic root of 55271101 is about 380.9190611634.

Adding to 55271101 its reverse (10117255), we get a palindrome (65388356).

The spelling of 55271101 in words is "fifty-five million, two hundred seventy-one thousand, one hundred one".