385231555 has 16 divisors (see below), whose sum is σ = 487468800. Its totient is φ = 291448800.

The previous prime is 385231549. The next prime is 385231573. The reversal of 385231555 is 555132583.

It is not a de Polignac number, because 385231555 - 2²⁷ = 251013827 is a prime.

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, 55530 + ... + 62080.

It is an arithmetic number, because the mean of its divisors is an integer number (30466800).

Almost surely, 2^385231555 is an apocalyptic number.

385231555 is a deficient number, since it is larger than the sum of its proper divisors (102237245).

385231555 is a wasteful number, since it uses less digits than its factorization.

385231555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194.

The product of its digits is 90000, while the sum is 37.

The square root of 385231555 is about 19627.3165511743. The cubic root of 385231555 is about 727.6244509444.

The spelling of 385231555 in words is "three hundred eighty-five million, two hundred thirty-one thousand, five hundred fifty-five".