55276188181 has 2 divisors, whose sum is σ = 55276188182. Its totient is φ = 55276188180.

The previous prime is 55276188103. The next prime is 55276188203. The reversal of 55276188181 is 18188167255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41073507556 + 14202680625 = 202666^2 + 119175^2 .

It is a cyclic number.

It is not a de Polignac number, because 55276188181 - 2⁹ = 55276187669 is a prime.

It is a super-2 number, since 2×55276188181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55276188101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27638094090 + 27638094091.

It is an arithmetic number, because the mean of its divisors is an integer number (27638094091).

Almost surely, 2^55276188181 is an apocalyptic number.

It is an amenable number.

55276188181 is a deficient number, since it is larger than the sum of its proper divisors (1).

55276188181 is an equidigital number, since it uses as much as digits as its factorization.

55276188181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1075200, while the sum is 52.

The spelling of 55276188181 in words is "fifty-five billion, two hundred seventy-six million, one hundred eighty-eight thousand, one hundred eighty-one".