385815455 has 32 divisors (see below), whose sum is σ = 497041920. Its totient is φ = 286844800.

The previous prime is 385815407. The next prime is 385815467. The reversal of 385815455 is 554518583.

It is not a de Polignac number, because 385815455 - 2¹⁶ = 385749919 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685004 + ... + 685566.

It is an arithmetic number, because the mean of its divisors is an integer number (15532560).

Almost surely, 2^385815455 is an apocalyptic number.

385815455 is a deficient number, since it is larger than the sum of its proper divisors (111226465).

385815455 is a wasteful number, since it uses less digits than its factorization.

385815455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751.

The product of its digits is 480000, while the sum is 44.

The square root of 385815455 is about 19642.1855963129. The cubic root of 385815455 is about 727.9918883440.

The spelling of 385815455 in words is "three hundred eighty-five million, eight hundred fifteen thousand, four hundred fifty-five".