385645055 has 4 divisors (see below), whose sum is σ = 462774072. Its totient is φ = 308516040.

The previous prime is 385645049. The next prime is 385645129. The reversal of 385645055 is 550546583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550546583 = 2003 ⋅274861.

It is not a de Polignac number, because 385645055 - 2¹⁴ = 385628671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38564501 + ... + 38564510.

It is an arithmetic number, because the mean of its divisors is an integer number (115693518).

Almost surely, 2^385645055 is an apocalyptic number.

385645055 is a deficient number, since it is larger than the sum of its proper divisors (77129017).

385645055 is an equidigital number, since it uses as much as digits as its factorization.

385645055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77129016.

The product of its (nonzero) digits is 360000, while the sum is 41.

The square root of 385645055 is about 19637.8475144299. The cubic root of 385645055 is about 727.8846971266.

The spelling of 385645055 in words is "three hundred eighty-five million, six hundred forty-five thousand, fifty-five".