54666659 has 2 divisors, whose sum is σ = 54666660. Its totient is φ = 54666658.

The previous prime is 54666641. The next prime is 54666701. The reversal of 54666659 is 95666645.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54666659 - 2¹⁶ = 54601123 is a prime.

It is not a weakly prime, because it can be changed into another prime (54666259) 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, 27333329 + 27333330.

It is an arithmetic number, because the mean of its divisors is an integer number (27333330).

Almost surely, 2^54666659 is an apocalyptic number.

54666659 is a deficient number, since it is larger than the sum of its proper divisors (1).

54666659 is an equidigital number, since it uses as much as digits as its factorization.

54666659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 47.

The square root of 54666659 is about 7393.6904858129. The cubic root of 54666659 is about 379.5253977956.

It can be divided in two parts, 5 and 4666659, that added together give a palindrome (4666664).

The spelling of 54666659 in words is "fifty-four million, six hundred sixty-six thousand, six hundred fifty-nine".