57291671521 has 8 divisors (see below), whose sum is σ = 66398396544. Its totient is φ = 48415496640.

The previous prime is 57291671519. The next prime is 57291671537. The reversal of 57291671521 is 12517619275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57291671521 - 2¹ = 57291671519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57291671501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57637000 + ... + 57637993.

It is an arithmetic number, because the mean of its divisors is an integer number (8299799568).

Almost surely, 2^57291671521 is an apocalyptic number.

It is an amenable number.

57291671521 is a deficient number, since it is larger than the sum of its proper divisors (9106725023).

57291671521 is a wasteful number, since it uses less digits than its factorization.

57291671521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115275071.

The product of its digits is 264600, while the sum is 46.

The spelling of 57291671521 in words is "fifty-seven billion, two hundred ninety-one million, six hundred seventy-one thousand, five hundred twenty-one".