255489079 has 4 divisors (see below), whose sum is σ = 255686760. Its totient is φ = 255291400.

The previous prime is 255489077. The next prime is 255489109. The reversal of 255489079 is 970984552.

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 255489079 - 2¹ = 255489077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255489077) 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, 96889 + ... + 99490.

It is an arithmetic number, because the mean of its divisors is an integer number (63921690).

Almost surely, 2^255489079 is an apocalyptic number.

255489079 is a deficient number, since it is larger than the sum of its proper divisors (197681).

255489079 is a wasteful number, since it uses less digits than its factorization.

255489079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197680.

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 255489079 is about 15984.0257444738. The cubic root of 255489079 is about 634.5377245980.

The spelling of 255489079 in words is "two hundred fifty-five million, four hundred eighty-nine thousand, seventy-nine".