55441181 has 2 divisors, whose sum is σ = 55441182.
Its totient is φ = 55441180.
The previous prime is 55441171. The next prime is 55441213. The reversal of 55441181 is 18114455.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 42902500 + 12538681 = 6550^2 + 3541^2
It is a cyclic number.
It is not a de Polignac number, because 55441181 - 26 = 55441117 is a prime.
It is a super-2 number, since 2×554411812 = 6147449101349522, which contains 22 as substring.
It is a Sophie Germain prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (55441151) 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, 27720590 + 27720591.
It is an arithmetic number, because the mean of its divisors is an integer number (27720591).
Almost surely, 255441181 is an apocalyptic number.
It is an amenable number.
55441181 is a deficient number, since it is larger than the sum of its proper divisors (1).
55441181 is an equidigital number, since it uses as much as digits as its factorization.
55441181 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 3200, while the sum is 29.
The square root of 55441181 is about 7445.8834935822.
The cubic root of 55441181 is about 381.3093819177.
The spelling of 55441181 in words is "fifty-five million, four hundred forty-one thousand, one hundred eighty-one".