57109293 has 10 divisors (see below), whose sum is σ = 85311534. Its totient is φ = 38072808.

The previous prime is 57109267. The next prime is 57109303. The reversal of 57109293 is 39290175.

It can be written as a sum of positive squares in only one way, i.e., 56881764 + 227529 = 7542^2 + 477^2 .

It is not a de Polignac number, because 57109293 - 2⁹ = 57108781 is a prime.

It is a super-2 number, since 2×57109293² = 6522942693919698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57109693) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 352446 + ... + 352607.

Almost surely, 2^57109293 is an apocalyptic number.

It is an amenable number.

57109293 is a deficient number, since it is larger than the sum of its proper divisors (28202241).

57109293 is an equidigital number, since it uses as much as digits as its factorization.

57109293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705065 (or 705056 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 57109293 is about 7557.0690747141. The cubic root of 57109293 is about 385.0959293199.

The spelling of 57109293 in words is "fifty-seven million, one hundred nine thousand, two hundred ninety-three".