57082309 has 8 divisors (see below), whose sum is σ = 57784320. Its totient is φ = 56384496.

The previous prime is 57082307. The next prime is 57082313. The reversal of 57082309 is 90328075.

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

It is a cyclic number.

It is not a de Polignac number, because 57082309 - 2¹ = 57082307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57082303) 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, 32547 + ... + 34255.

It is an arithmetic number, because the mean of its divisors is an integer number (7223040).

Almost surely, 2^57082309 is an apocalyptic number.

It is an amenable number.

57082309 is a deficient number, since it is larger than the sum of its proper divisors (702011).

57082309 is a wasteful number, since it uses less digits than its factorization.

57082309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 57082309 is about 7555.2835155274. The cubic root of 57082309 is about 385.0352674726.

The spelling of 57082309 in words is "fifty-seven million, eighty-two thousand, three hundred nine".