5491055181 has 4 divisors (see below), whose sum is σ = 7321406912. Its totient is φ = 3660703452.

The previous prime is 5491055179. The next prime is 5491055197. The reversal of 5491055181 is 1815501945.

It is a happy number.

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 not a de Polignac number, because 5491055181 - 2¹ = 5491055179 is a prime.

It is a super-2 number, since 2×5491055181² = 60303374001573885522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5491055281) 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, 915175861 + ... + 915175866.

It is an arithmetic number, because the mean of its divisors is an integer number (1830351728).

Almost surely, 2^5491055181 is an apocalyptic number.

It is an amenable number.

5491055181 is a deficient number, since it is larger than the sum of its proper divisors (1830351731).

5491055181 is a wasteful number, since it uses less digits than its factorization.

5491055181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830351730.

The product of its (nonzero) digits is 36000, while the sum is 39.

The square root of 5491055181 is about 74101.6543742446. The cubic root of 5491055181 is about 1764.2167294423.

The spelling of 5491055181 in words is "five billion, four hundred ninety-one million, fifty-five thousand, one hundred eighty-one".