5511660055 has 32 divisors (see below), whose sum is σ = 7293017088. Its totient is φ = 3965520000.

The previous prime is 5511660041. The next prime is 5511660073. The reversal of 5511660055 is 5500661155.

It is not a de Polignac number, because 5511660055 - 2¹¹ = 5511658007 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 5511660055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2166114 + ... + 2168656.

It is an arithmetic number, because the mean of its divisors is an integer number (227906784).

Almost surely, 2^5511660055 is an apocalyptic number.

5511660055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5511660055 is a deficient number, since it is larger than the sum of its proper divisors (1781357033).

5511660055 is a wasteful number, since it uses less digits than its factorization.

5511660055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 5511660055 is about 74240.5553252399. Note that the first 3 decimals coincide. The cubic root of 5511660055 is about 1766.4206828318.

It can be divided in two parts, 5511 and 660055, that added together give a palindrome (665566).

The spelling of 5511660055 in words is "five billion, five hundred eleven million, six hundred sixty thousand, fifty-five".