57239943 has 8 divisors (see below), whose sum is σ = 76511856. Its totient is φ = 38064000.

The previous prime is 57239929. The next prime is 57239953. The reversal of 57239943 is 34993275.

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

It is not a de Polignac number, because 57239943 - 2⁵ = 57239911 is a prime.

It is a super-2 number, since 2×57239943² = 6552822149286498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57239895 and 57239904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57239953) 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, 22588 + ... + 24993.

It is an arithmetic number, because the mean of its divisors is an integer number (9563982).

Almost surely, 2^57239943 is an apocalyptic number.

57239943 is a deficient number, since it is larger than the sum of its proper divisors (19271913).

57239943 is a wasteful number, since it uses less digits than its factorization.

57239943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47985.

The product of its digits is 204120, while the sum is 42.

The square root of 57239943 is about 7565.7083607551. The cubic root of 57239943 is about 385.3893693892.

The spelling of 57239943 in words is "fifty-seven million, two hundred thirty-nine thousand, nine hundred forty-three".