54566618 has 4 divisors (see below), whose sum is σ = 81849930. Its totient is φ = 27283308.

The previous prime is 54566597. The next prime is 54566641. The reversal of 54566618 is 81666545.

It is a happy number.

54566618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81666545 = 5 ⋅16333309.

It can be written as a sum of positive squares in only one way, i.e., 50310649 + 4255969 = 7093^2 + 2063^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13641653 + ... + 13641656.

Almost surely, 2^54566618 is an apocalyptic number.

54566618 is a deficient number, since it is larger than the sum of its proper divisors (27283312).

54566618 is a wasteful number, since it uses less digits than its factorization.

54566618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27283311.

The product of its digits is 172800, while the sum is 41.

The square root of 54566618 is about 7386.9220924550. The cubic root of 54566618 is about 379.2937435882.

The spelling of 54566618 in words is "fifty-four million, five hundred sixty-six thousand, six hundred eighteen".