5555051111 has 2 divisors, whose sum is σ = 5555051112. Its totient is φ = 5555051110.

The previous prime is 5555051101. The next prime is 5555051179. The reversal of 5555051111 is 1111505555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5555051111 - 2¹⁰ = 5555050087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5555051101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777525555 + 2777525556.

It is an arithmetic number, because the mean of its divisors is an integer number (2777525556).

Almost surely, 2^5555051111 is an apocalyptic number.

5555051111 is a deficient number, since it is larger than the sum of its proper divisors (1).

5555051111 is an equidigital number, since it uses as much as digits as its factorization.

5555051111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3125, while the sum is 29.

The square root of 5555051111 is about 74532.2152562233. The cubic root of 5555051111 is about 1771.0440084489.

Adding to 5555051111 its reverse (1111505555), we get a palindrome (6666556666).

The spelling of 5555051111 in words is "five billion, five hundred fifty-five million, fifty-one thousand, one hundred eleven".