57066040 has 32 divisors (see below), whose sum is σ = 132543360. Its totient is φ = 22089600.

The previous prime is 57066029. The next prime is 57066041. The reversal of 57066040 is 4066075.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57066041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21771 + ... + 24250.

It is an arithmetic number, because the mean of its divisors is an integer number (4141980).

Almost surely, 2^57066040 is an apocalyptic number.

It is an amenable number.

57066040 is an abundant number, since it is smaller than the sum of its proper divisors (75477320).

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

57066040 is a wasteful number, since it uses less digits than its factorization.

57066040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46063 (or 46059 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 57066040 is about 7554.2067750360. The cubic root of 57066040 is about 384.9986844280.

The spelling of 57066040 in words is "fifty-seven million, sixty-six thousand, forty".