54955566 has 24 divisors (see below), whose sum is σ = 119465424. Its totient is φ = 18257760.

The previous prime is 54955561. The next prime is 54955597. The reversal of 54955566 is 66555945.

54955566 is a `hidden beast` number, since 5 + 4 + 95 + 556 + 6 = 666.

54955566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×54955566² = 6040228468760712, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54955561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 690 + ... + 10506.

It is an arithmetic number, because the mean of its divisors is an integer number (4977726).

Almost surely, 2^54955566 is an apocalyptic number.

54955566 is an abundant number, since it is smaller than the sum of its proper divisors (64509858).

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

54955566 is a wasteful number, since it uses less digits than its factorization.

54955566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10136 (or 10133 counting only the distinct ones).

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

The square root of 54955566 is about 7413.2021421245. The cubic root of 54955566 is about 380.1928061271.

The spelling of 54955566 in words is "fifty-four million, nine hundred fifty-five thousand, five hundred sixty-six".