57102359521 has 9 divisors (see below), whose sum is σ = 57441045081. Its totient is φ = 56765663472.

The previous prime is 57102359473. The next prime is 57102359563. The reversal of 57102359521 is 12595320175.

The square root of 57102359521 is 238961.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 210569121 + 56891790400 = 14511^2 + 238520^2 .

It is not a de Polignac number, because 57102359521 - 2¹³ = 57102351329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57102359581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 47074711 + ... + 47075923.

Almost surely, 2^57102359521 is an apocalyptic number.

57102359521 is the 238961-st square number.

57102359521 is the 119481-st centered octagonal number.

It is an amenable number.

57102359521 is a deficient number, since it is larger than the sum of its proper divisors (338685560).

57102359521 is an frugal number, since it uses more digits than its factorization.

57102359521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 40.

Adding to 57102359521 its reverse (12595320175), we get a palindrome (69697679696).

The spelling of 57102359521 in words is "fifty-seven billion, one hundred two million, three hundred fifty-nine thousand, five hundred twenty-one".