57247628581 has 16 divisors (see below), whose sum is σ = 67436328960. Its totient is φ = 47911129920.

The previous prime is 57247628569. The next prime is 57247628591. The reversal of 57247628581 is 18582674275.

It is a cyclic number.

It is not a de Polignac number, because 57247628581 - 2¹³ = 57247620389 is a prime.

It is a super-2 number, since 2×57247628581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57247628531) 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 15 ways as a sum of consecutive naturals, for example, 483301 + ... + 589978.

It is an arithmetic number, because the mean of its divisors is an integer number (4214770560).

Almost surely, 2^57247628581 is an apocalyptic number.

It is an amenable number.

57247628581 is a deficient number, since it is larger than the sum of its proper divisors (10188700379).

57247628581 is a wasteful number, since it uses less digits than its factorization.

57247628581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073676.

The product of its digits is 7526400, while the sum is 55.

The spelling of 57247628581 in words is "fifty-seven billion, two hundred forty-seven million, six hundred twenty-eight thousand, five hundred eighty-one".