5541211111 has 4 divisors (see below), whose sum is σ = 5603472000. Its totient is φ = 5478950224.

The previous prime is 5541211103. The next prime is 5541211133. The reversal of 5541211111 is 1111121455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5541211111 - 2³ = 5541211103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5541211141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31130311 + ... + 31130488.

It is an arithmetic number, because the mean of its divisors is an integer number (1400868000).

Almost surely, 2^5541211111 is an apocalyptic number.

5541211111 is a deficient number, since it is larger than the sum of its proper divisors (62260889).

5541211111 is an equidigital number, since it uses as much as digits as its factorization.

5541211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62260888.

The product of its digits is 200, while the sum is 22.

The square root of 5541211111 is about 74439.3115967632. The cubic root of 5541211111 is about 1769.5719767910.

Adding to 5541211111 its reverse (1111121455), we get a palindrome (6652332566).

The spelling of 5541211111 in words is "five billion, five hundred forty-one million, two hundred eleven thousand, one hundred eleven".