54289666 has 4 divisors (see below), whose sum is σ = 81434502. Its totient is φ = 27144832.

The previous prime is 54289663. The next prime is 54289673. The reversal of 54289666 is 66698245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66698245 = 5 ⋅13339649.

It can be written as a sum of positive squares in only one way, i.e., 49294441 + 4995225 = 7021^2 + 2235^2 .

It is not an unprimeable number, because it can be changed into a prime (54289661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13572415 + ... + 13572418.

Almost surely, 2^54289666 is an apocalyptic number.

54289666 is a deficient number, since it is larger than the sum of its proper divisors (27144836).

54289666 is a wasteful number, since it uses less digits than its factorization.

54289666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27144835.

The product of its digits is 622080, while the sum is 46.

The square root of 54289666 is about 7368.1521428374. The cubic root of 54289666 is about 378.6509550874.

The spelling of 54289666 in words is "fifty-four million, two hundred eighty-nine thousand, six hundred sixty-six".