55000011111 has 4 divisors (see below), whose sum is σ = 73333348152. Its totient is φ = 36666674072.

The previous prime is 55000011089. The next prime is 55000011133. The reversal of 55000011111 is 11111000055.

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 (55000011089) and next prime (55000011133).

It is a cyclic number.

It is not a de Polignac number, because 55000011111 - 2¹¹ = 55000009063 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000013111) 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 3 ways as a sum of consecutive naturals, for example, 9166668516 + ... + 9166668521.

It is an arithmetic number, because the mean of its divisors is an integer number (18333337038).

Almost surely, 2^55000011111 is an apocalyptic number.

55000011111 is a deficient number, since it is larger than the sum of its proper divisors (18333337041).

55000011111 is a wasteful number, since it uses less digits than its factorization.

55000011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18333337040.

The product of its (nonzero) digits is 25, while the sum is 15.

Adding to 55000011111 its reverse (11111000055), we get a palindrome (66111011166).

The spelling of 55000011111 in words is "fifty-five billion, eleven thousand, one hundred eleven".