255673081 has 4 divisors (see below), whose sum is σ = 270712692. Its totient is φ = 240633472.

The previous prime is 255673073. The next prime is 255673097. The reversal of 255673081 is 180376552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 237653056 + 18020025 = 15416^2 + 4245^2 .

It is a cyclic number.

It is not a de Polignac number, because 255673081 - 2³ = 255673073 is a prime.

It is a super-2 number, since 2×255673081² = 130737448696065122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255673081.

It is not an unprimeable number, because it can be changed into a prime (255673001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7519780 + ... + 7519813.

It is an arithmetic number, because the mean of its divisors is an integer number (67678173).

Almost surely, 2^255673081 is an apocalyptic number.

It is an amenable number.

255673081 is a deficient number, since it is larger than the sum of its proper divisors (15039611).

255673081 is a wasteful number, since it uses less digits than its factorization.

255673081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15039610.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 255673081 is about 15989.7805175681. The cubic root of 255673081 is about 634.6900183777.

The spelling of 255673081 in words is "two hundred fifty-five million, six hundred seventy-three thousand, eighty-one".