385509055 has 16 divisors (see below), whose sum is σ = 470029824. Its totient is φ = 303478560.

The previous prime is 385509043. The next prime is 385509077. The reversal of 385509055 is 550905583.

It is not a de Polignac number, because 385509055 - 2¹⁹ = 384984767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 385508999 and 385509017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342724 + ... + 343846.

It is an arithmetic number, because the mean of its divisors is an integer number (29376864).

Almost surely, 2^385509055 is an apocalyptic number.

385509055 is a deficient number, since it is larger than the sum of its proper divisors (84520769).

385509055 is a wasteful number, since it uses less digits than its factorization.

385509055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 385509055 is about 19634.3845077965. The cubic root of 385509055 is about 727.7991227912.

The spelling of 385509055 in words is "three hundred eighty-five million, five hundred nine thousand, fifty-five".