5551105111 has 4 divisors (see below), whose sum is σ = 5588361000. Its totient is φ = 5513849224.

The previous prime is 5551105069. The next prime is 5551105127. The reversal of 5551105111 is 1115011555.

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 5551105111 - 2⁷ = 5551104983 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 (5551105181) 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, 18627721 + ... + 18628018.

It is an arithmetic number, because the mean of its divisors is an integer number (1397090250).

Almost surely, 2^5551105111 is an apocalyptic number.

5551105111 is a deficient number, since it is larger than the sum of its proper divisors (37255889).

5551105111 is a wasteful number, since it uses less digits than its factorization.

5551105111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37255888.

The product of its (nonzero) digits is 625, while the sum is 25.

The square root of 5551105111 is about 74505.7387789692. The cubic root of 5551105111 is about 1770.6245586588.

Adding to 5551105111 its reverse (1115011555), we get a palindrome (6666116666).

The spelling of 5551105111 in words is "five billion, five hundred fifty-one million, one hundred five thousand, one hundred eleven".