4157857 has 8 divisors (see below), whose sum is σ = 4551552. Its totient is φ = 3766800.

The previous prime is 4157837. The next prime is 4157863. The reversal of 4157857 is 7587514.

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 4157857 - 2⁷ = 4157729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4157807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4303 + ... + 5179.

It is an arithmetic number, because the mean of its divisors is an integer number (568944).

Almost surely, 2^4157857 is an apocalyptic number.

It is an amenable number.

4157857 is a deficient number, since it is larger than the sum of its proper divisors (393695).

4157857 is a wasteful number, since it uses less digits than its factorization.

4157857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319.

The product of its digits is 39200, while the sum is 37.

The square root of 4157857 is about 2039.0823916654. The cubic root of 4157857 is about 160.8014088843.

The spelling of 4157857 in words is "four million, one hundred fifty-seven thousand, eight hundred fifty-seven".