255163555 has 4 divisors (see below), whose sum is σ = 306196272. Its totient is φ = 204130840.

The previous prime is 255163553. The next prime is 255163567. The reversal of 255163555 is 555361552.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 255163555 - 2¹ = 255163553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255163553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25516351 + ... + 25516360.

It is an arithmetic number, because the mean of its divisors is an integer number (76549068).

Almost surely, 2^255163555 is an apocalyptic number.

255163555 is a deficient number, since it is larger than the sum of its proper divisors (51032717).

255163555 is an equidigital number, since it uses as much as digits as its factorization.

255163555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51032716.

The product of its digits is 112500, while the sum is 37.

The square root of 255163555 is about 15973.8397074717. The cubic root of 255163555 is about 634.2681174488.

The spelling of 255163555 in words is "two hundred fifty-five million, one hundred sixty-three thousand, five hundred fifty-five".