57941785521 has 81 divisors (see below), whose sum is σ = 91424945547. Its totient is φ = 35355631680.

The previous prime is 57941785519. The next prime is 57941785529. The reversal of 57941785521 is 12558714975.

The square root of 57941785521 is 240711.

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

57941785521 is a `hidden beast` number, since 5 + 7 + 9 + 41 + 78 + 5 + 521 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2791959921 + 55149825600 = 52839^2 + 234840^2 .

It is not a de Polignac number, because 57941785521 - 2¹ = 57941785519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57941785529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 562541556 + ... + 562541658.

Almost surely, 2^57941785521 is an apocalyptic number.

57941785521 is the 240711-st square number.

57941785521 is the 120356-th centered octagonal number.

It is an amenable number.

57941785521 is a deficient number, since it is larger than the sum of its proper divisors (33483160026).

57941785521 is a wasteful number, since it uses less digits than its factorization.

57941785521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 166 counting only the distinct ones).

The product of its digits is 3528000, while the sum is 54.

The spelling of 57941785521 in words is "fifty-seven billion, nine hundred forty-one million, seven hundred eighty-five thousand, five hundred twenty-one".