255577 has 8 divisors (see below), whose sum is σ = 302400. Its totient is φ = 211344.

The previous prime is 255571. The next prime is 255587. The reversal of 255577 is 775552.

255577 = T₁₁₈ + T₁₁₉ + ... + T₁₄₆.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-255577 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (255571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427 + ... + 832.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2²⁵⁵⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

255577 is a deficient number, since it is larger than the sum of its proper divisors (46823).

255577 is a wasteful number, since it uses less digits than its factorization.

255577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its digits is 12250, while the sum is 31.

The square root of 255577 is about 505.5462392304. The cubic root of 255577 is about 63.4610503694.

The spelling of 255577 in words is "two hundred fifty-five thousand, five hundred seventy-seven".