54666645 has 32 divisors (see below), whose sum is σ = 101036160. Its totient is φ = 24944640.

The previous prime is 54666641. The next prime is 54666659.

It is a happy number.

54666645 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 54666645 - 2² = 54666641 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 54666597 and 54666606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54666641) 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 in 31 ways as a sum of consecutive naturals, for example, 6940 + ... + 12549.

It is an arithmetic number, because the mean of its divisors is an integer number (3157380).

Almost surely, 2^54666645 is an apocalyptic number.

54666645 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54666645 is a deficient number, since it is larger than the sum of its proper divisors (46369515).

54666645 is a wasteful number, since it uses less digits than its factorization.

54666645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19525.

The product of its digits is 518400, while the sum is 42.

The square root of 54666645 is about 7393.6895390596. The cubic root of 54666645 is about 379.5253653970.

The spelling of 54666645 in words is "fifty-four million, six hundred sixty-six thousand, six hundred forty-five".