385145 has 4 divisors (see below), whose sum is σ = 462180. Its totient is φ = 308112.

The previous prime is 385141. The next prime is 385153. The reversal of 385145 is 541583.

385145 = T₃₉₀ + T₃₉₁ + ... + T₃₉₄.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541583 = 7 ⋅77369.

It can be written as a sum of positive squares in 2 ways, for example, as 246016 + 139129 = 496^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 385145 - 2² = 385141 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 385145.

It is not an unprimeable number, because it can be changed into a prime (385141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38510 + ... + 38519.

It is an arithmetic number, because the mean of its divisors is an integer number (115545).

2³⁸⁵¹⁴⁵ is an apocalyptic number.

It is an amenable number.

385145 is a deficient number, since it is larger than the sum of its proper divisors (77035).

385145 is an equidigital number, since it uses as much as digits as its factorization.

385145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77034.

The product of its digits is 2400, while the sum is 26.

The square root of 385145 is about 620.6005156298. The cubic root of 385145 is about 72.7569951903.

The spelling of 385145 in words is "three hundred eighty-five thousand, one hundred forty-five".