255485577 has 4 divisors (see below), whose sum is σ = 340647440. Its totient is φ = 170323716.

The previous prime is 255485569. The next prime is 255485579. The reversal of 255485577 is 775584552.

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 not a de Polignac number, because 255485577 - 2³ = 255485569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255485579) 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, 42580927 + ... + 42580932.

It is an arithmetic number, because the mean of its divisors is an integer number (85161860).

Almost surely, 2^255485577 is an apocalyptic number.

It is an amenable number.

255485577 is a deficient number, since it is larger than the sum of its proper divisors (85161863).

255485577 is an equidigital number, since it uses as much as digits as its factorization.

255485577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85161862.

The product of its digits is 1960000, while the sum is 48.

The square root of 255485577 is about 15983.9161972278. The cubic root of 255485577 is about 634.5348253726.

It can be divided in two parts, 25548 and 5577, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 255485577 in words is "two hundred fifty-five million, four hundred eighty-five thousand, five hundred seventy-seven".