5551101111 has 8 divisors (see below), whose sum is σ = 7403569024. Its totient is φ = 3699683640.

The previous prime is 5551101107. The next prime is 5551101131. The reversal of 5551101111 is 1111011555.

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

It is not a de Polignac number, because 5551101111 - 2² = 5551101107 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 (5551101131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250195 + ... + 271476.

It is an arithmetic number, because the mean of its divisors is an integer number (925446128).

Almost surely, 2^5551101111 is an apocalyptic number.

5551101111 is a deficient number, since it is larger than the sum of its proper divisors (1852467913).

5551101111 is a wasteful number, since it uses less digits than its factorization.

5551101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525221.

The product of its (nonzero) digits is 125, while the sum is 21.

The square root of 5551101111 is about 74505.7119353946. The cubic root of 5551101111 is about 1770.6241333681.

Adding to 5551101111 its reverse (1111011555), we get a palindrome (6662112666).

The spelling of 5551101111 in words is "five billion, five hundred fifty-one million, one hundred one thousand, one hundred eleven".