3857157 has 12 divisors (see below), whose sum is σ = 5707884. Its totient is φ = 2508480.

The previous prime is 3857153. The next prime is 3857167. The reversal of 3857157 is 7517583.

3857157 is a `hidden beast` number, since 38 + 571 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2090916 + 1766241 = 1446^2 + 1329^2 .

It is not a de Polignac number, because 3857157 - 2² = 3857153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3857153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4858 + ... + 5595.

It is an arithmetic number, because the mean of its divisors is an integer number (475657).

Almost surely, 2^3857157 is an apocalyptic number.

It is an amenable number.

3857157 is a deficient number, since it is larger than the sum of its proper divisors (1850727).

3857157 is a wasteful number, since it uses less digits than its factorization.

3857157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10500 (or 10497 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 3857157 is about 1963.9646127158. The cubic root of 3857157 is about 156.8275792501.

The spelling of 3857157 in words is "three million, eight hundred fifty-seven thousand, one hundred fifty-seven".