255769087 has 4 divisors (see below), whose sum is σ = 292307536. Its totient is φ = 219230640.

The previous prime is 255769081. The next prime is 255769091. The reversal of 255769087 is 780967552.

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

It is a cyclic number.

It is not a de Polignac number, because 255769087 - 2⁷ = 255768959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255769087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255769081) 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, 18269214 + ... + 18269227.

It is an arithmetic number, because the mean of its divisors is an integer number (73076884).

Almost surely, 2^255769087 is an apocalyptic number.

255769087 is a deficient number, since it is larger than the sum of its proper divisors (36538449).

255769087 is an equidigital number, since it uses as much as digits as its factorization.

255769087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36538448.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The square root of 255769087 is about 15992.7823407936. The cubic root of 255769087 is about 634.7694510973.

The spelling of 255769087 in words is "two hundred fifty-five million, seven hundred sixty-nine thousand, eighty-seven".