385542655 has 4 divisors (see below), whose sum is σ = 462651192. Its totient is φ = 308434120.

The previous prime is 385542637. The next prime is 385542679. The reversal of 385542655 is 556245583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556245583 = 431 ⋅1290593.

It is not a de Polignac number, because 385542655 - 2¹¹ = 385540607 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, 38554261 + ... + 38554270.

It is an arithmetic number, because the mean of its divisors is an integer number (115662798).

Almost surely, 2^385542655 is an apocalyptic number.

385542655 is a deficient number, since it is larger than the sum of its proper divisors (77108537).

385542655 is an equidigital number, since it uses as much as digits as its factorization.

385542655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77108536.

The product of its digits is 720000, while the sum is 43.

The square root of 385542655 is about 19635.2401309482. The cubic root of 385542655 is about 727.8202665575.

It can be divided in two parts, 38554 and 2655, that added together give a square (41209 = 203²).

The spelling of 385542655 in words is "three hundred eighty-five million, five hundred forty-two thousand, six hundred fifty-five".