5555506566 has 32 divisors (see below), whose sum is σ = 11200024800. Its totient is φ = 1837059840.

The previous prime is 5555506553. The next prime is 5555506573. The reversal of 5555506566 is 6656055555.

It is a super-2 number, since 2×5555506566² = 61727306409738224712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378900 + ... + 393288.

It is an arithmetic number, because the mean of its divisors is an integer number (350000775).

Almost surely, 2^5555506566 is an apocalyptic number.

5555506566 is an abundant number, since it is smaller than the sum of its proper divisors (5644518234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5555506566 is a wasteful number, since it uses less digits than its factorization.

5555506566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14904.

The product of its (nonzero) digits is 3375000, while the sum is 48.

The square root of 5555506566 is about 74535.2706173393. The cubic root of 5555506566 is about 1771.0924093719.

The spelling of 5555506566 in words is "five billion, five hundred fifty-five million, five hundred six thousand, five hundred sixty-six".