5541661111 has 8 divisors (see below), whose sum is σ = 6413496320. Its totient is φ = 4689868248.

The previous prime is 5541661039. The next prime is 5541661117. The reversal of 5541661111 is 1111661455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5541661111 - 2¹¹ = 5541659063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5541661117) 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 7 ways as a sum of consecutive naturals, for example, 5009991 + ... + 5011096.

It is an arithmetic number, because the mean of its divisors is an integer number (801687040).

Almost surely, 2^5541661111 is an apocalyptic number.

5541661111 is a deficient number, since it is larger than the sum of its proper divisors (871835209).

5541661111 is a wasteful number, since it uses less digits than its factorization.

5541661111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021173.

The product of its digits is 3600, while the sum is 31.

The square root of 5541661111 is about 74442.3341318634. The cubic root of 5541661111 is about 1769.6198776211.

The spelling of 5541661111 in words is "five billion, five hundred forty-one million, six hundred sixty-one thousand, one hundred eleven".