54066140 has 24 divisors (see below), whose sum is σ = 114307200. Its totient is φ = 21480128.

The previous prime is 54066109. The next prime is 54066149. The reversal of 54066140 is 4166045.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54066149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6092 + ... + 12051.

It is an arithmetic number, because the mean of its divisors is an integer number (4762800).

Almost surely, 2^54066140 is an apocalyptic number.

It is an amenable number.

54066140 is an abundant number, since it is smaller than the sum of its proper divisors (60241060).

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

54066140 is a wasteful number, since it uses less digits than its factorization.

54066140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18301 (or 18299 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 54066140 is about 7352.9681081860. The cubic root of 54066140 is about 378.1305690048.

The spelling of 54066140 in words is "fifty-four million, sixty-six thousand, one hundred forty".