57307093321 has 3 divisors (see below), whose sum is σ = 57307332711. Its totient is φ = 57306853932.

The previous prime is 57307093307. The next prime is 57307093379. The reversal of 57307093321 is 12339070375.

It is a happy number.

The square root of 57307093321 is 239389.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 9372369721 + 47934723600 = 96811^2 + 218940^2 .

It is not a de Polignac number, because 57307093321 - 2¹⁷ = 57306962249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57307093301) 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 2 ways as a sum of consecutive naturals, for example, 119695 + ... + 359083.

It is an arithmetic number, because the mean of its divisors is an integer number (19102444237).

Almost surely, 2^57307093321 is an apocalyptic number.

57307093321 is the 239389-th square number.

57307093321 is the 119695-th centered octagonal number.

It is an amenable number.

57307093321 is a deficient number, since it is larger than the sum of its proper divisors (239390).

57307093321 is an frugal number, since it uses more digits than its factorization.

57307093321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478778 (or 239389 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 40.

The spelling of 57307093321 in words is "fifty-seven billion, three hundred seven million, ninety-three thousand, three hundred twenty-one".