55000566 has 32 divisors (see below), whose sum is σ = 122698080. Its totient is φ = 18262368.

The previous prime is 55000553. The next prime is 55000571. The reversal of 55000566 is 66500055.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 13120 + ... + 16796.

It is an arithmetic number, because the mean of its divisors is an integer number (3834315).

Almost surely, 2^55000566 is an apocalyptic number.

55000566 is an abundant number, since it is smaller than the sum of its proper divisors (67697514).

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

55000566 is a wasteful number, since it uses less digits than its factorization.

55000566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965 (or 3959 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 55000566 is about 7416.2366467097. The cubic root of 55000566 is about 380.2965505996.

The spelling of 55000566 in words is "fifty-five million, five hundred sixty-six", and thus it is an aban number.