57665243 has 8 divisors (see below), whose sum is σ = 59229360. Its totient is φ = 56120800.

The previous prime is 57665233. The next prime is 57665263. The reversal of 57665243 is 34256675.

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

It is not a de Polignac number, because 57665243 - 2⁴ = 57665227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57665197 and 57665206.

It is not an unprimeable number, because it can be changed into a prime (57665213) 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 7 ways as a sum of consecutive naturals, for example, 1121 + ... + 10797.

It is an arithmetic number, because the mean of its divisors is an integer number (7403670).

Almost surely, 2^57665243 is an apocalyptic number.

57665243 is a deficient number, since it is larger than the sum of its proper divisors (1564117).

57665243 is a wasteful number, since it uses less digits than its factorization.

57665243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9837.

The product of its digits is 151200, while the sum is 38.

The square root of 57665243 is about 7593.7634279717. The cubic root of 57665243 is about 386.3415123043.

The spelling of 57665243 in words is "fifty-seven million, six hundred sixty-five thousand, two hundred forty-three".