55510051111 has 2 divisors, whose sum is σ = 55510051112. Its totient is φ = 55510051110.

The previous prime is 55510051081. The next prime is 55510051211. The reversal of 55510051111 is 11115001555.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55510051111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55510051211) 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 as a sum of consecutive naturals, namely, 27755025555 + 27755025556.

It is an arithmetic number, because the mean of its divisors is an integer number (27755025556).

Almost surely, 2^55510051111 is an apocalyptic number.

55510051111 is a deficient number, since it is larger than the sum of its proper divisors (1).

55510051111 is an equidigital number, since it uses as much as digits as its factorization.

55510051111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 55510051111 its reverse (11115001555), we get a palindrome (66625052666).

The spelling of 55510051111 in words is "fifty-five billion, five hundred ten million, fifty-one thousand, one hundred eleven".