255528578 has 4 divisors (see below), whose sum is σ = 383292870. Its totient is φ = 127764288.

The previous prime is 255528577. The next prime is 255528589. The reversal of 255528578 is 875825552.

255528578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 139169209 + 116359369 = 11797^2 + 10787^2 .

It is not an unprimeable number, because it can be changed into a prime (255528577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63882143 + ... + 63882146.

Almost surely, 2^255528578 is an apocalyptic number.

255528578 is a deficient number, since it is larger than the sum of its proper divisors (127764292).

255528578 is a wasteful number, since it uses less digits than its factorization.

255528578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127764291.

The product of its digits is 1120000, while the sum is 47.

The square root of 255528578 is about 15985.2612740612. The cubic root of 255528578 is about 634.5704230786.

It can be divided in two parts, 2 and 55528578, that multiplied together give a triangular number (111057156 = T₁₄₉₀₃).

The spelling of 255528578 in words is "two hundred fifty-five million, five hundred twenty-eight thousand, five hundred seventy-eight".