57203816 has 8 divisors (see below), whose sum is σ = 107257170. Its totient is φ = 28601904.

The previous prime is 57203791. The next prime is 57203819. The reversal of 57203816 is 61830275.

It is a happy number.

57203816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 38316100 + 18887716 = 6190^2 + 4346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (57203819) 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 as a sum of consecutive naturals, namely, 3575231 + ... + 3575246.

Almost surely, 2^57203816 is an apocalyptic number.

It is an amenable number.

57203816 is a deficient number, since it is larger than the sum of its proper divisors (50053354).

57203816 is a wasteful number, since it uses less digits than its factorization.

57203816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7150483 (or 7150479 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 57203816 is about 7563.3204348355. The cubic root of 57203816 is about 385.3082728028.

The spelling of 57203816 in words is "fifty-seven million, two hundred three thousand, eight hundred sixteen".