57540140 has 24 divisors (see below), whose sum is σ = 138096672. Its totient is φ = 19728000.

The previous prime is 57540127. The next prime is 57540167. The reversal of 57540140 is 4104575.

It is a super-2 number, since 2×57540140² = 6621735422439200, which contains 22 as substring.

It is an unprimeable number.

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, 205361 + ... + 205640.

It is an arithmetic number, because the mean of its divisors is an integer number (5754028).

Almost surely, 2^57540140 is an apocalyptic number.

It is an amenable number.

57540140 is an abundant number, since it is smaller than the sum of its proper divisors (80556532).

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

57540140 is a wasteful number, since it uses less digits than its factorization.

57540140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411017 (or 411015 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 57540140 is about 7585.5217355169. The cubic root of 57540140 is about 386.0619246137.

The spelling of 57540140 in words is "fifty-seven million, five hundred forty thousand, one hundred forty".