55555506511 has 2 divisors, whose sum is σ = 55555506512. Its totient is φ = 55555506510.

The previous prime is 55555506493. The next prime is 55555506527. The reversal of 55555506511 is 11560555555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55555506511 - 2¹¹ = 55555504463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55555506571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777753255 + 27777753256.

It is an arithmetic number, because the mean of its divisors is an integer number (27777753256).

Almost surely, 2^55555506511 is an apocalyptic number.

55555506511 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555506511 is an equidigital number, since it uses as much as digits as its factorization.

55555506511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 468750, while the sum is 43.

The spelling of 55555506511 in words is "fifty-five billion, five hundred fifty-five million, five hundred six thousand, five hundred eleven".