321955055 has 8 divisors (see below), whose sum is σ = 386485344. Its totient is φ = 257471200.

The previous prime is 321955043. The next prime is 321955087. The reversal of 321955055 is 550559123.

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

It is not a de Polignac number, because 321955055 - 2²⁰ = 320906479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6110 + ... + 26100.

It is an arithmetic number, because the mean of its divisors is an integer number (48310668).

Almost surely, 2^321955055 is an apocalyptic number.

321955055 is a deficient number, since it is larger than the sum of its proper divisors (64530289).

321955055 is a wasteful number, since it uses less digits than its factorization.

321955055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23217.

The product of its (nonzero) digits is 33750, while the sum is 35.

The square root of 321955055 is about 17943.1060577593. The cubic root of 321955055 is about 685.3805085748.

The spelling of 321955055 in words is "three hundred twenty-one million, nine hundred fifty-five thousand, fifty-five".