5555666061 has 12 divisors (see below), whose sum is σ = 8754383040. Its totient is φ = 3367070280.

The previous prime is 5555666047. The next prime is 5555666071. The reversal of 5555666061 is 1606665555.

It is not a de Polignac number, because 5555666061 - 2¹⁷ = 5555534989 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5555665998 and 5555666016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555666071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28058821 + ... + 28059018.

It is an arithmetic number, because the mean of its divisors is an integer number (729531920).

Almost surely, 2^5555666061 is an apocalyptic number.

It is an amenable number.

5555666061 is a deficient number, since it is larger than the sum of its proper divisors (3198716979).

5555666061 is a wasteful number, since it uses less digits than its factorization.

5555666061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56117856 (or 56117853 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The square root of 5555666061 is about 74536.3405393638. The cubic root of 5555666061 is about 1771.1093581822.

The spelling of 5555666061 in words is "five billion, five hundred fifty-five million, six hundred sixty-six thousand, sixty-one".