385257 has 8 divisors (see below), whose sum is σ = 523584. Its totient is φ = 251888.

The previous prime is 385249. The next prime is 385261. The reversal of 385257 is 752583.

It is a happy number.

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 385257 - 2³ = 385249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385267) 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, 1053 + ... + 1370.

It is an arithmetic number, because the mean of its divisors is an integer number (65448).

2³⁸⁵²⁵⁷ is an apocalyptic number.

It is an amenable number.

385257 is a deficient number, since it is larger than the sum of its proper divisors (138327).

385257 is a wasteful number, since it uses less digits than its factorization.

385257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479.

The product of its digits is 8400, while the sum is 30.

The square root of 385257 is about 620.6907442519. The cubic root of 385257 is about 72.7640470744.

The spelling of 385257 in words is "three hundred eighty-five thousand, two hundred fifty-seven".