255122989 has 8 divisors (see below), whose sum is σ = 280918368. Its totient is φ = 229761360.

The previous prime is 255122983. The next prime is 255123019. The reversal of 255122989 is 989221552.

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

It is a cyclic number.

It is not a de Polignac number, because 255122989 - 2⁹ = 255122477 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 (255122983) 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 7 ways as a sum of consecutive naturals, for example, 107202 + ... + 109555.

It is an arithmetic number, because the mean of its divisors is an integer number (35114796).

Almost surely, 2^255122989 is an apocalyptic number.

It is an amenable number.

255122989 is a deficient number, since it is larger than the sum of its proper divisors (25795379).

255122989 is a wasteful number, since it uses less digits than its factorization.

255122989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216875.

The product of its digits is 129600, while the sum is 43.

The square root of 255122989 is about 15972.5698934141. The cubic root of 255122989 is about 634.2345036044.

The spelling of 255122989 in words is "two hundred fifty-five million, one hundred twenty-two thousand, nine hundred eighty-nine".