57217404 has 24 divisors (see below), whose sum is σ = 134471680. Its totient is φ = 18934704.

The previous prime is 57217387. The next prime is 57217411. The reversal of 57217404 is 40471275.

57217404 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 an unprimeable number.

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, 15484 + ... + 18819.

Almost surely, 2^57217404 is an apocalyptic number.

It is an amenable number.

57217404 is an abundant number, since it is smaller than the sum of its proper divisors (77254276).

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

57217404 is a wasteful number, since it uses less digits than its factorization.

57217404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34449 (or 34447 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 57217404 is about 7564.2186642111. The cubic root of 57217404 is about 385.3387786600.

Adding to 57217404 its reverse (40471275), we get a palindrome (97688679).

The spelling of 57217404 in words is "fifty-seven million, two hundred seventeen thousand, four hundred four".