255143193 has 4 divisors (see below), whose sum is σ = 340190928. Its totient is φ = 170095460.

The previous prime is 255143159. The next prime is 255143221. The reversal of 255143193 is 391341552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255143193 - 2¹² = 255139097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255143143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42523863 + ... + 42523868.

It is an arithmetic number, because the mean of its divisors is an integer number (85047732).

Almost surely, 2^255143193 is an apocalyptic number.

It is an amenable number.

255143193 is a deficient number, since it is larger than the sum of its proper divisors (85047735).

255143193 is an equidigital number, since it uses as much as digits as its factorization.

255143193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85047734.

The product of its digits is 16200, while the sum is 33.

The square root of 255143193 is about 15973.2023401696. The cubic root of 255143193 is about 634.2512455109.

The spelling of 255143193 in words is "two hundred fifty-five million, one hundred forty-three thousand, one hundred ninety-three".