57066140 has 12 divisors (see below), whose sum is σ = 119838936. Its totient is φ = 22826448.

The previous prime is 57066109. The next prime is 57066143. The reversal of 57066140 is 4166075.

57066140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57066143) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1426634 + ... + 1426673.

It is an arithmetic number, because the mean of its divisors is an integer number (9986578).

Almost surely, 2^57066140 is an apocalyptic number.

It is an amenable number.

57066140 is an abundant number, since it is smaller than the sum of its proper divisors (62772796).

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

57066140 is a wasteful number, since it uses less digits than its factorization.

57066140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853316 (or 2853314 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 57066140 is about 7554.2133938617. The cubic root of 57066140 is about 384.9989093127.

The spelling of 57066140 in words is "fifty-seven million, sixty-six thousand, one hundred forty".