321125255 has 8 divisors (see below), whose sum is σ = 420382224. Its totient is φ = 233545600.

The previous prime is 321125221. The next prime is 321125267. The reversal of 321125255 is 552521123.

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

It is not a de Polignac number, because 321125255 - 2⁶ = 321125191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2919266 + ... + 2919375.

It is an arithmetic number, because the mean of its divisors is an integer number (52547778).

Almost surely, 2^321125255 is an apocalyptic number.

321125255 is a deficient number, since it is larger than the sum of its proper divisors (99256969).

321125255 is a wasteful number, since it uses less digits than its factorization.

321125255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838657.

The product of its digits is 3000, while the sum is 26.

The square root of 321125255 is about 17919.9680524269. The cubic root of 321125255 is about 684.7911736685.

Adding to 321125255 its reverse (552521123), we get a palindrome (873646378).

The spelling of 321125255 in words is "three hundred twenty-one million, one hundred twenty-five thousand, two hundred fifty-five".