57171621201 has 4 divisors (see below), whose sum is σ = 76228828272. Its totient is φ = 38114414132.

The previous prime is 57171621181. The next prime is 57171621223. The reversal of 57171621201 is 10212617175.

57171621201 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57171621201 - 2²³ = 57163232593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57171621601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9528603531 + ... + 9528603536.

It is an arithmetic number, because the mean of its divisors is an integer number (19057207068).

Almost surely, 2^57171621201 is an apocalyptic number.

It is an amenable number.

57171621201 is a deficient number, since it is larger than the sum of its proper divisors (19057207071).

57171621201 is a wasteful number, since it uses less digits than its factorization.

57171621201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19057207070.

The product of its (nonzero) digits is 5880, while the sum is 33.

The spelling of 57171621201 in words is "fifty-seven billion, one hundred seventy-one million, six hundred twenty-one thousand, two hundred one".