5550511111 has 4 divisors (see below), whose sum is σ = 5550674472. Its totient is φ = 5550347752.

The previous prime is 5550511093. The next prime is 5550511129. The reversal of 5550511111 is 1111150555.

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

It is an interprime number because it is at equal distance from previous prime (5550511093) and next prime (5550511129).

It is a cyclic number.

It is not a de Polignac number, because 5550511111 - 2¹⁷ = 5550380039 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 (5550514111) 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, 9385 + ... + 105778.

It is an arithmetic number, because the mean of its divisors is an integer number (1387668618).

Almost surely, 2^5550511111 is an apocalyptic number.

5550511111 is a deficient number, since it is larger than the sum of its proper divisors (163361).

5550511111 is a wasteful number, since it uses less digits than its factorization.

5550511111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163360.

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

The square root of 5550511111 is about 74501.7524022086. The cubic root of 5550511111 is about 1770.5614007539.

Adding to 5550511111 its reverse (1111150555), we get a palindrome (6661661666).

The spelling of 5550511111 in words is "five billion, five hundred fifty million, five hundred eleven thousand, one hundred eleven".