57209204 has 18 divisors (see below), whose sum is σ = 108411030. Its totient is φ = 26403936.

The previous prime is 57209183. The next prime is 57209231. The reversal of 57209204 is 40290275.

It can be written as a sum of positive squares in 3 ways, for example, as 5513104 + 51696100 = 2348^2 + 7190^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41639 + ... + 42990.

It is an arithmetic number, because the mean of its divisors is an integer number (6022835).

Almost surely, 2^57209204 is an apocalyptic number.

It is an amenable number.

57209204 is a deficient number, since it is larger than the sum of its proper divisors (51201826).

57209204 is a wasteful number, since it uses less digits than its factorization.

57209204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84659 (or 84644 counting only the distinct ones).

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

The square root of 57209204 is about 7563.6766192111. The cubic root of 57209204 is about 385.3203697569.

Adding to 57209204 its reverse (40290275), we get a palindrome (97499479).

The spelling of 57209204 in words is "fifty-seven million, two hundred nine thousand, two hundred four".