57523705281 has 117 divisors (see below), whose sum is σ = 102553965489. Its totient is φ = 32171312376.

The previous prime is 57523705243. The next prime is 57523705297. The reversal of 57523705281 is 18250732575.

The square root of 57523705281 is 239841.

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

57523705281 is a `hidden beast` number, since 5 + 7 + 52 + 3 + 70 + 528 + 1 = 666.

It is not a de Polignac number, because 57523705281 - 2¹³ = 57523697089 is a prime.

It is a super-2 number, since 2×57523705281² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57523705231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 116 ways as a sum of consecutive naturals, for example, 1223908600 + ... + 1223908646.

Almost surely, 2^57523705281 is an apocalyptic number.

57523705281 is the 239841-st square number.

57523705281 is the 119921-st centered octagonal number.

It is an amenable number.

57523705281 is a deficient number, since it is larger than the sum of its proper divisors (45030260208).

57523705281 is an frugal number, since it uses more digits than its factorization.

57523705281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 45.

The spelling of 57523705281 in words is "fifty-seven billion, five hundred twenty-three million, seven hundred five thousand, two hundred eighty-one".