3855257 has 8 divisors (see below), whose sum is σ = 4425216. Its totient is φ = 3290112.

The previous prime is 3855239. The next prime is 3855287. The reversal of 3855257 is 7525583.

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

It is not a de Polignac number, because 3855257 - 2¹⁸ = 3593113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3855217) 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, 728 + ... + 2870.

It is an arithmetic number, because the mean of its divisors is an integer number (553152).

Almost surely, 2^3855257 is an apocalyptic number.

It is an amenable number.

3855257 is a deficient number, since it is larger than the sum of its proper divisors (569959).

3855257 is a wasteful number, since it uses less digits than its factorization.

3855257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407.

The product of its digits is 42000, while the sum is 35.

The square root of 3855257 is about 1963.4808376962. The cubic root of 3855257 is about 156.8018244139.

The spelling of 3855257 in words is "three million, eight hundred fifty-five thousand, two hundred fifty-seven".