57040394 has 16 divisors (see below), whose sum is σ = 90405600. Its totient is φ = 26916624.

The previous prime is 57040393. The next prime is 57040409. The reversal of 57040394 is 49304075.

57040394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57040394.

It is not an unprimeable number, because it can be changed into a prime (57040393) 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 7 ways as a sum of consecutive naturals, for example, 7817 + ... + 13235.

It is an arithmetic number, because the mean of its divisors is an integer number (5650350).

Almost surely, 2^57040394 is an apocalyptic number.

57040394 is a deficient number, since it is larger than the sum of its proper divisors (33365206).

57040394 is a wasteful number, since it uses less digits than its factorization.

57040394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 57040394 is about 7552.5091194913. The cubic root of 57040394 is about 384.9410018101.

The spelling of 57040394 in words is "fifty-seven million, forty thousand, three hundred ninety-four".