545151181 has 2 divisors, whose sum is σ = 545151182. Its totient is φ = 545151180.

The previous prime is 545151179. The next prime is 545151203. The reversal of 545151181 is 181151545.

545151181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385533225 + 159617956 = 19635^2 + 12634^2 .

It is a cyclic number.

It is not a de Polignac number, because 545151181 - 2¹ = 545151179 is a prime.

It is a super-2 number, since 2×545151181² = 594379620291389522, which contains 22 as substring.

Together with 545151179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545151281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272575590 + 272575591.

It is an arithmetic number, because the mean of its divisors is an integer number (272575591).

Almost surely, 2^545151181 is an apocalyptic number.

It is an amenable number.

545151181 is a deficient number, since it is larger than the sum of its proper divisors (1).

545151181 is an equidigital number, since it uses as much as digits as its factorization.

545151181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000, while the sum is 31.

The square root of 545151181 is about 23348.4727766079. The cubic root of 545151181 is about 816.9064386806.

It can be divided in two parts, 54515 and 1181, that added together give a square (55696 = 236²).

The spelling of 545151181 in words is "five hundred forty-five million, one hundred fifty-one thousand, one hundred eighty-one".