5451161181 has 4 divisors (see below), whose sum is σ = 7268214912. Its totient is φ = 3634107452.

The previous prime is 5451161171. The next prime is 5451161189. The reversal of 5451161181 is 1811611545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5451161181 - 2¹³ = 5451152989 is a prime.

It is a super-2 number, since 2×5451161181² = 59430316442482629522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5451161189) 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 in 3 ways as a sum of consecutive naturals, for example, 908526861 + ... + 908526866.

It is an arithmetic number, because the mean of its divisors is an integer number (1817053728).

Almost surely, 2^5451161181 is an apocalyptic number.

It is an amenable number.

5451161181 is a deficient number, since it is larger than the sum of its proper divisors (1817053731).

5451161181 is a wasteful number, since it uses less digits than its factorization.

5451161181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817053730.

The product of its digits is 4800, while the sum is 33.

The square root of 5451161181 is about 73831.9793924015. The cubic root of 5451161181 is about 1759.9338367216.

The spelling of 5451161181 in words is "five billion, four hundred fifty-one million, one hundred sixty-one thousand, one hundred eighty-one".